21123709009920

Names of 21123709009920

• Cardinal: 21123709009920 can be written as Twenty-one trillion, one hundred twenty-three billion, seven hundred nine million, nine thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 2.112370900992 × 10¹³

Factors of 21123709009920

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 25
• Sum of prime factors: 4954

Divisors of 21123709009920

• Number of divisors d(n): 912
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 11 12 15 16 18 20 22 24 27 30 32 33 36 40 44 45 48 54 55 60 64 66 72 80 88 90 96 99 108 110 120 121 128 132 135 144 160 165 176 180 192 198 216 220 240 242 256 264 270 288 297 320 330 352 360 363 384 396 432 440 480 484 495 512 528 540 576 594 605 640 660 704 720 726 768 792 864 880 960 968 990 1024 1056 1080 1089 1152 1188 1210 1280 1320 1408 1440 1452 1485 1536 1584 1728 1760 1815 1920 1936 1980 2048 2112 2160 2178 2304 2376 2420 2560 2640 2816 2880 2904 2970 3072 3168 3267 3456 3520 3630 3840 3872 3960 4096 4224 4320 4356 4608 4752 4840 4933 5120 5280 5445 5632 5760 5808 5940 6144 6336 6534 6912 7040 7260 7680 7744 7920 8192 8448 8640 8712 9216 9504 9680 9866 10240 10560 10890 11264 11520 11616 11880 12288 12672 13068 13824 14080 14520 14799 15360 15488 15840 16335 16384 16896 17280 17424 18432 19008 19360 19732 20480 21120 21780 22528 23040 23232 23760 24576 24665 25344 26136 27648 28160 29040 29598 30720 30976 31680 32670 32768 33792 34560 34848 36864 38016 38720 39464 40960 42240 43560 44397 45056 46080 46464 47520 49152 49330 50688 52272 54263 55296 56320 58080 59196 61440 61952 63360 65340 65536 67584 69120 69696 73728 73995 76032 77440 78928 81920 84480 87120 88794 90112 92160 92928 95040 98304 98660 101376 104544 108526 110592 112640 116160 118392 122880 123904 126720 130680 131072 133191 135168 138240 139392 147456 147990 152064 154880 157856 162789 163840 168960 174240 177588 180224 184320 185856 190080 196608 197320 202752 209088 217052 221184 221985 225280 232320 236784 245760 247808 253440 261360 262144 266382 270336 271315 276480 278784 294912 295980 304128 309760 315712 325578 327680 337920 348480 355176 360448 368640 371712 380160 393216 394640 405504 418176 434104 442368 443970 450560 464640 473568 488367 491520 495616 506880 522720 532764 540672 542630 552960 557568 589824 591960 596893 608256 619520 631424 651156 655360 665955 675840 696960 710352 720896 737280 743424 760320 786432 789280 811008 813945 836352 868208 884736 887940 901120 929280 947136 976734 983040 991232 1013760 1045440 1065528 1081344 1085260 1105920 1115136 1179648 1183920 1193786 1216512 1239040 1262848 1302312 1310720 1331910 1351680 1393920 1420704 1441792 1465101 1474560 1486848 1520640 1578560 1622016 1627890 1672704 1736416 1769472 1775880 1790679 1802240 1858560 1894272 1953468 1966080 1982464 2027520 2090880 2131056 2162688 2170520 2211840 2230272 2359296 2367840 2387572 2433024 2441835 2478080 2525696 2604624 2663820 2703360 2787840 2841408 2883584 2930202 2949120 2973696 2984465 3041280 3157120 3244032 3255780 3345408 3472832 3538944 3551760 3581358 3604480 3717120 3788544 3906936 3932160 3964928 4055040 4181760 4262112 4325376 4341040 4423680 4460544 4735680 4775144 4866048 4883670 4956160 5051392 5209248 5327640 5372037 5406720 5575680 5682816 5860404 5898240 5947392 5968930 6082560 6314240 6488064 6511560 6690816 6945664 7077888 7103520 7162716 7208960 7325505 7434240 7577088 7813872 7929856 8110080 8363520 8524224 8650752 8682080 8847360 8921088 8953395 9471360 9550288 9732096 9767340 9912320 10102784 10418496 10655280 10744074 10813440 11151360 11365632 11720808 11796480 11894784 11937860 12165120 12628480 12976128 13023120 13381632 13891328 14207040 14325432 14417920 14651010 14868480 15154176 15627744 15859712 16116111 16220160 16727040 17048448 17364160 17694720 17842176 17906790 18942720 19100576 19464192 19534680 19824640 20205568 20836992 21310560 21488148 21626880 22302720 22731264 23441616 23789568 23875720 24330240 25256960 25952256 26046240 26763264 26860185 27782656 28414080 28650864 29302020 29736960 30308352 31255488 31719424 32232222 32440320 33454080 34096896 34728320 35389440 35684352 35813580 37885440 38201152 38928384 39069360 39649280 40411136 41673984 42621120 42976296 43253760 44605440 45462528 46883232 47579136 47751440 48660480 50513920 52092480 53526528 53720370 55565312 56828160 57301728 58604040 59473920 60616704 62510976 64464444 64880640 66908160 68193792 69456640 71368704 71627160 75770880 76402304 77856768 78138720 79298560 80580555 80822272 83347968 85242240 85952592 89210880 90925056 93766464 95158272 95502880 97320960 101027840 104184960 107053056 107440740 111130624 113656320 114603456 117208080 118947840 121233408 125021952 128928888 129761280 133816320 136387584 138913280 142737408 143254320 151541760 152804608 156277440 158597120 161161110 161644544 166695936 170484480 171905184 178421760 181850112 187532928 191005760 194641920 202055680 208369920 214106112 214881480 222261248 227312640 229206912 234416160 237895680 242466816 250043904 257857776 267632640 272775168 277826560 285474816 286508640 303083520 305609216 312554880 322322220 323289088 333391872 340968960 343810368 356843520 363700224 375065856 382011520 389283840 404111360 416739840 428212224 429762960 444522496 454625280 458413824 468832320 475791360 484933632 500087808 515715552 535265280 545550336 555653120 573017280 606167040 611218432 625109760 644644440 646578176 666783744 681937920 687620736 713687040 727400448 750131712 764023040 808222720 833479680 856424448 859525920 889044992 909250560 916827648 937664640 969867264 1000175616 1031431104 1070530560 1091100672 1111306240 1146034560 1212334080 1222436864 1250219520 1289288880 1293156352 1333567488 1363875840 1375241472 1427374080 1454800896 1500263424 1528046080 1616445440 1666959360 1719051840 1778089984 1818501120 1833655296 1875329280 1939734528 2000351232 2062862208 2141061120 2182201344 2222612480 2292069120 2424668160 2444873728 2500439040 2578577760 2667134976 2727751680 2750482944 2909601792 3000526848 3056092160 3232890880 3333918720 3438103680 3556179968 3637002240 3667310592 3750658560 3879469056 4000702464 4125724416 4282122240 4364402688 4445224960 4584138240 4849336320 4889747456 5000878080 5157155520 5334269952 5455503360 5500965888 5819203584 6001053696 6112184320 6465781760 6667837440 6876207360 7112359936 7274004480 7334621184 7501317120 8001404928 8251448832 8728805376 8890449920 9168276480 9698672640 9779494912 10001756160 10314311040 10668539904 10911006720 11001931776 11638407168 12002107392 12224368640 13335674880 13752414720 14224719872 14548008960 14669242368 15002634240 16002809856 16502897664 17457610752 17780899840 18336552960 19397345280 19558989824 20003512320 20628622080 21337079808 21822013440 22003863552 24004214784 24448737280 26671349760 27504829440 29096017920 29338484736 30005268480 32005619712 33005795328 34915221504 35561799680 36673105920 39117979648 40007024640 41257244160 42674159616 43644026880 44007727104 48008429568 48897474560 53342699520 55009658880 58192035840 58676969472 60010536960 64011239424 66011590656 71123599360 73346211840 78235959296 80014049280 82514488320 87288053760 88015454208 96016859136 97794949120 106685399040 110019317760 117353938944 120021073920 128022478848 132023181312 146692423680 156471918592 160028098560 165028976640 174576107520 176030908416 192033718272 195589898240 213370798080 220038635520 234707877888 240042147840 264046362624 293384847360 320056197120 330057953280 352061816832 384067436544 391179796480 440077271040 469415755776 480084295680 528092725248 586769694720 640112394240 660115906560 704123633664 782359592960 880154542080 960168591360 1056185450496 1173539389440 1320231813120 1408247267328 1760309084160 1920337182720 2112370900992 2347078778880 2640463626240 3520618168320 4224741801984 5280927252480 7041236336640 10561854504960 21123709009920
• Sum of all divisors σ(n): 82571679291360
• Sum of proper divisors (its aliquot sum) s(n): 61447970281440
• 21123709009920 is an abundant number, because the sum of its proper divisors (61447970281440) is greater than itself. Its abundance is 40324261271520

Bases of 21123709009920

• Binary: 100110011011000111111001011000000000000000000₂
• Hexadecimal: 0x13363F2C0000
• Base-36: 7HK3IY2O0

Squares and roots of 21123709009920

• 21123709009920 squared (21123709009920²) is 446211082335775386658406400
• 21123709009920 cubed (21123709009920³) is 9425633060262373493905551032988991488000
• The square root of 21123709009920 is 4596053.6343606781
• The cube root of 21123709009920 is 27643.3109331801

Scales and comparisons

• 21,123,709,009,920 seconds is equal to 671,668 years, 31 weeks, 3 days, 19 hours, 12 minutes.
• To count from 1 to 21,123,709,009,920 would take you about one million, six hundred seventy-nine thousand, one hundred seventy-one years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 21123709009920 cubic inches would be around 2303.6 feet tall.

Recreational maths with 21123709009920

• 21123709009920 backwards is 02990090732112
• 21123709009920 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 21123709009920's digits is 45
• More coming soon!