21081210612

Names of 21081210612

• Cardinal: 21081210612 can be written as Twenty-one billion, eighty-one million, two hundred ten thousand, six hundred twelve.

Scientific notation

• Scientific notation: 2.1081210612 × 10¹⁰

Factors of 21081210612

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 2338

Divisors of 21081210612

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 4 6 7 11 12 14 21 22 28 31 33 42 44 47 49 62 66 77 84 93 94 98 124 132 141 147 154 186 188 196 217 231 282 294 308 329 341 372 434 462 517 539 564 588 651 658 682 868 924 987 1023 1034 1078 1302 1316 1364 1457 1519 1551 1617 1974 2046 2068 2156 2237 2303 2387 2604 2914 3038 3102 3234 3619 3948 4092 4371 4474 4557 4606 4774 5828 6076 6204 6468 6711 6909 7161 7238 8742 8948 9114 9212 9548 10199 10857 13422 13818 14322 14476 15659 16027 16709 17484 18228 20398 21714 24607 25333 26844 27636 28644 30597 31318 32054 33418 40796 43428 46977 48081 49214 50127 50666 61194 62636 64108 66836 69347 71393 73821 75999 93954 96162 98428 100254 101332 105139 109613 112189 122388 138694 142786 147642 151998 172249 187908 192324 200508 208041 210278 214179 219226 224378 277388 285572 295284 303996 315417 328839 336567 344498 416082 420556 428358 438452 448756 485429 516747 630834 657678 673134 688996 735973 762817 785323 832164 856716 970858 1033494 1156529 1205743 1261668 1315356 1346268 1456287 1471946 1525634 1570646 1941716 2066988 2207919 2288451 2313058 2355969 2411486 2912574 2943892 3051268 3141292 3259309 3398003 3469587 3617229 4415838 4576902 4626116 4711938 4822972 5151811 5339719 5825148 6518618 6796006 6939174 7234458 8095703 8831676 9153804 9423876 9777927 10194009 10303622 10679438 13037236 13592012 13878348 14468916 15455433 16019157 16191406 19555854 20388018 20607244 21358876 22815163 24287109 30910866 32038314 32382812 35852399 37378033 39111708 40776036 45630326 48574218 56669921 61821732 64076628 68445489 71704798 74756066 91260652 97148436 107557197 112134099 113339842 136890978 143409596 149512132 159706141 170009763 215114394 224268198 226679684 250966793 273781956 319412282 340019526 430228788 448536396 479118423 501933586 638824564 680039052 752900379 958236846 1003867172 1505800758 1756767551 1916473692 3011601516 3513535102 5270302653 7027070204 10540605306 21081210612
• Sum of all divisors σ(n): 65836302336
• Sum of proper divisors (its aliquot sum) s(n): 44755091724
• 21081210612 is an abundant number, because the sum of its proper divisors (44755091724) is greater than itself. Its abundance is 23673881112

Bases of 21081210612

• Binary: 10011101000100010011011111011110100₂
• Hexadecimal: 0x4E889BEF4
• Base-36: 9ON7I7O

Squares and roots of 21081210612

• 21081210612 squared (21081210612²) is 444417440867501414544
• 21081210612 cubed (21081210612³) is 9368857670573853306209983940928
• The square root of 21081210612 is 145193.7003178857
• The cube root of 21081210612 is 2762.4760132283

Scales and comparisons

• 21,081,210,612 seconds is equal to 670 years, 16 weeks, 3 days, 11 hours, 50 minutes, 12 seconds.
• To count from 1 to 21,081,210,612 would take you about one thousand, three hundred forty 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 21081210612 cubic inches would be around 230.2 feet tall.

Recreational maths with 21081210612

• 21081210612 backwards is 21601218012
• The number of decimal digits it has is: 11
• The sum of 21081210612's digits is 24
• More coming soon!