21131212500

Names of 21131212500

• Cardinal: 21131212500 can be written as Twenty-one billion, one hundred thirty-one million, two hundred twelve thousand, five hundred.

Scientific notation

• Scientific notation: 2.11312125 × 10¹⁰

Factors of 21131212500

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 183

Divisors of 21131212500

• Number of divisors d(n): 576
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 15 17 18 20 25 27 29 30 34 36 45 50 51 54 58 60 68 75 85 87 90 100 102 108 116 125 127 135 145 150 153 170 174 180 204 225 250 254 255 261 270 290 300 306 340 348 375 381 425 435 450 459 493 500 508 510 522 540 580 612 625 635 675 725 750 762 765 783 850 870 900 918 986 1020 1044 1125 1143 1250 1270 1275 1305 1350 1450 1479 1500 1524 1530 1566 1700 1740 1836 1875 1905 1972 2125 2159 2175 2250 2286 2295 2465 2500 2540 2550 2610 2700 2900 2958 3060 3125 3132 3175 3375 3429 3625 3683 3750 3810 3825 3915 4250 4318 4350 4437 4500 4572 4590 4930 5100 5220 5625 5715 5916 6250 6350 6375 6477 6525 6750 6858 7250 7366 7395 7500 7620 7650 7830 8500 8636 8700 8874 9180 9375 9525 9860 10625 10795 10875 11049 11250 11430 11475 12325 12500 12700 12750 12954 13050 13311 13500 13716 14500 14732 14790 15300 15660 15875 16875 17145 17748 18125 18415 18750 19050 19125 19431 19575 21250 21590 21750 22098 22185 22500 22860 22950 24650 25500 25908 26100 26622 28125 28575 29580 31750 31875 32385 32625 33147 33750 34290 36250 36830 36975 37500 38100 38250 38862 39150 42500 43180 43500 44196 44370 45900 47625 49300 53125 53244 53975 54375 55245 56250 57150 57375 58293 61625 62611 63500 63750 64770 65250 66294 66555 67500 68580 72500 73660 73950 76500 77724 78300 79375 84375 85725 88740 90625 92075 95250 95625 97155 97875 99441 106250 107950 108750 110490 110925 112500 114300 114750 116586 123250 125222 127500 129540 130500 132588 133110 142875 147900 158750 159375 161925 163125 165735 168750 171450 181250 184150 184875 187833 190500 191250 194310 195750 198882 212500 215900 217500 220980 221850 229500 233172 238125 246500 250444 266220 269875 271875 276225 285750 286875 291465 308125 313055 317500 318750 323850 326250 331470 332775 337500 342900 362500 368300 369750 375666 382500 388620 391500 396875 397764 428625 443700 460375 476250 478125 485775 489375 497205 539750 543750 552450 554625 563499 571500 573750 582930 616250 626110 637500 647700 652500 662940 665550 714375 739500 751332 793750 809625 815625 828675 857250 920750 924375 939165 952500 956250 971550 978750 994410 1079500 1087500 1104900 1109250 1126998 1147500 1165860 1190625 1232500 1252220 1331100 1349375 1381125 1428750 1434375 1457325 1540625 1565275 1587500 1619250 1631250 1657350 1663875 1690497 1714500 1841500 1848750 1878330 1912500 1943100 1957500 1988820 2143125 2218500 2253996 2301875 2381250 2428875 2446875 2486025 2698750 2762250 2773125 2817495 2857500 2868750 2914650 3081250 3130550 3238500 3262500 3314700 3327750 3380994 3571875 3697500 3756660 4048125 4143375 4286250 4603750 4621875 4695825 4762500 4857750 4893750 4972050 5397500 5524500 5546250 5634990 5737500 5829300 6162500 6261100 6655500 6746875 6761988 6905625 7143750 7286625 7826375 8096250 8286750 8319375 8452485 8572500 9207500 9243750 9391650 9715500 9787500 9944100 10715625 11092500 11269980 11509375 12144375 12430125 13493750 13811250 13865625 14087475 14287500 14573250 15652750 16192500 16573500 16638750 16904970 18487500 18783300 20240625 20716875 21431250 23018750 23479125 24288750 24860250 26987500 27622500 27731250 28174950 29146500 31305500 33277500 33809940 34528125 36433125 39131875 40481250 41433750 41596875 42262425 42862500 46037500 46958250 48577500 49720500 55462500 56349900 60721875 62150625 69056250 70437375 72866250 78263750 80962500 82867500 83193750 84524850 93916500 103584375 117395625 121443750 124301250 138112500 140874750 145732500 156527500 166387500 169049700 182165625 195659375 207168750 211312125 234791250 242887500 248602500 281749500 310753125 352186875 364331250 391318750 414337500 422624250 469582500 586978125 621506250 704373750 728662500 782637500 845248500 1056560625 1173956250 1243012500 1408747500 1760934375 2113121250 2347912500 3521868750 4226242500 5282803125 7043737500 10565606250 21131212500
• Sum of all divisors σ(n): 75595161600
• Sum of proper divisors (its aliquot sum) s(n): 54463949100
• 21131212500 is an abundant number, because the sum of its proper divisors (54463949100) is greater than itself. Its abundance is 33332736600

Bases of 21131212500

• Binary: 10011101011100001001011011011010100₂
• Hexadecimal: 0x4EB84B6D4
• Base-36: 9PGZ7X0

Squares and roots of 21131212500

• 21131212500 squared (21131212500²) is 446528141720156250000
• 21131212500 cubed (21131212500³) is 9435681049918737251953125000000
• The square root of 21131212500 is 145365.7886161665
• The cube root of 21131212500 is 2764.6583665797

Scales and comparisons

• 21,131,212,500 seconds is equal to 671 years, 47 weeks, 1 day, 5 hours, 15 minutes.
• To count from 1 to 21,131,212,500 would take you about one thousand, three hundred forty-three 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 21131212500 cubic inches would be around 230.4 feet tall.

Recreational maths with 21131212500

• 21131212500 backwards is 00521213112
• 21131212500 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21131212500's digits is 18
• More coming soon!