121991997816

Names of 121991997816

• Cardinal: 121991997816 can be written as One hundred twenty-one billion, nine hundred ninety-one million, nine hundred ninety-seven thousand, eight hundred sixteen.

Scientific notation

• Scientific notation: 1.21991997816 × 10¹¹

Factors of 121991997816

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 2948

Divisors of 121991997816

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 6 8 9 12 13 18 19 24 26 31 36 38 39 52 57 62 72 76 78 79 93 104 114 117 124 152 156 158 171 186 228 234 237 247 248 279 312 316 342 372 403 456 468 474 494 558 589 632 684 711 741 744 806 936 948 988 1027 1116 1178 1209 1368 1422 1482 1501 1612 1767 1896 1976 2054 2223 2232 2356 2418 2449 2801 2844 2964 3002 3081 3224 3534 3627 4108 4446 4503 4712 4836 4898 5301 5602 5688 5928 6004 6162 7068 7254 7347 7657 8216 8403 8892 9006 9243 9672 9796 10602 11204 12008 12324 13509 14136 14508 14694 15314 16806 17784 18012 18486 19513 19592 21204 22041 22408 22971 24648 25209 27018 29016 29388 30628 31837 33612 36024 36413 36972 39026 42408 44082 45942 46531 50418 53219 54036 58539 58776 61256 63674 67224 68913 72826 73944 78052 86831 88164 91884 93062 95511 100836 106438 108072 109239 117078 127348 137826 139593 145652 156104 159657 173662 175617 176328 183768 186124 191022 201672 212876 218478 221279 234156 254696 260493 275652 279186 286533 291304 319314 327717 347324 351234 372248 382044 418779 425752 436956 442558 468312 478971 520986 551304 558372 573066 604903 638628 655434 663837 691847 694648 702468 764088 781479 837558 873912 885116 957942 1041972 1116744 1128803 1146132 1209806 1277256 1310868 1327674 1383694 1404936 1562958 1649789 1675116 1770232 1814709 1915884 1991511 2075541 2083944 2257606 2292264 2419612 2621736 2655348 2767388 2876627 3125916 3299578 3350232 3386409 3629418 3831768 3983022 4151082 4204301 4515212 4839224 4949367 5310696 5444127 5534776 5753254 6226623 6251832 6599156 6772818 6859649 7258836 7966044 8302164 8408602 8629881 9030424 9898734 10159227 10888254 11506508 12453246 12612903 13198312 13545636 13719298 14517672 14848101 15932088 16604328 16817204 17259762 19797468 20318454 20578947 21447257 21776508 23013016 24906492 25225806 25889643 27091272 27438596 29696202 33634408 34519524 37838709 39594936 40636908 41157894 42894514 43553016 49812984 50451612 51779286 54655913 54877192 59392404 61736841 64341771 69039048 75677418 81273816 82315788 85789028 89175437 100903224 103558572 109311826 118784808 123473682 128683542 130333331 151354836 163967739 164631576 171578056 178350874 193025313 207117144 218623652 246947364 257367084 260666662 267526311 302709672 327935478 356701748 386050626 390999993 437247304 491903217 493894728 514734168 521333324 535052622 655870956 713403496 772101252 781999986 802578933 983806434 1042666648 1070105244 1172999979 1311741912 1544202504 1563999972 1605157866 1694333303 1967612868 2140210488 2345999958 3127999944 3210315732 3388666606 3935225736 4691999916 5082999909 6420631464 6777333212 9383999832 10165999818 13554666424 15248999727 20331999636 30497999454 40663999272 60995998908 121991997816
• Sum of all divisors σ(n): 391652352000
• Sum of proper divisors (its aliquot sum) s(n): 269660354184
• 121991997816 is an abundant number, because the sum of its proper divisors (269660354184) is greater than itself. Its abundance is 147668356368

Bases of 121991997816

• Binary: 1110001100111010010100010100101111000₂
• Hexadecimal: 0x1C674A2978
• Base-36: 1K1IVVY0

Squares and roots of 121991997816

• 121991997816 squared (121991997816²) is 14882047531138948769856
• 121991997816 cubed (121991997816³) is 1815490709916310830324809038634496
• The square root of 121991997816 is 349273.5286505405
• The cube root of 121991997816 is 4959.5672236647

Scales and comparisons

• 121,991,997,816 seconds is equal to 3,878 years, 50 weeks, 2 days, 10 hours, 3 minutes, 36 seconds.
• To count from 1 to 121,991,997,816 would take you about seven thousand, seven hundred fifty-seven 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 121991997816 cubic inches would be around 413.3 feet tall.

Recreational maths with 121991997816

• 121991997816 backwards is 618799199121
• The number of decimal digits it has is: 12
• The sum of 121991997816's digits is 63
• More coming soon!