21221520487398

Names of 21221520487398

• Cardinal: 21221520487398 can be written as Twenty-one trillion, two hundred twenty-one billion, five hundred twenty million, four hundred eighty-seven thousand, three hundred ninety-eight.

Scientific notation

• Scientific notation: 2.1221520487398 × 10¹³

Factors of 21221520487398

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 7864151

Divisors of 21221520487398

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 6 7 9 11 14 18 21 22 27 33 42 54 59 63 66 77 99 118 121 126 154 177 189 198 231 242 297 354 363 378 413 462 531 594 649 693 726 826 847 1062 1089 1239 1298 1386 1593 1694 1947 2079 2178 2478 2541 3186 3267 3717 3894 4158 4543 5082 5841 6534 7139 7434 7623 9086 11151 11682 13629 14278 15246 17523 21417 22302 22869 27258 35046 40887 42834 45738 49973 64251 81774 99946 122661 128502 149919 192753 245322 299838 385506 449757 899514 1349271 2698542 7864069 15728138 23592207 47184414 55048483 70776621 86504759 110096966 141553242 165145449 173009518 212329863 259514277 330290898 424659726 463980071 495436347 519028554 605533313 778542831 927960142 951552349 990872694 1211066626 1391940213 1486309041 1557085662 1816599939 1903104698 2335628493 2783880426 2854657047 2972618082 3247860497 3633199878 4175820639 4671256986 5103780781 5449799817 5709314094 6495720994 6660866443 8351641278 8563971141 9743581491 10207561562 10899599634 12527461917 13321732886 15311342343 16349399451 17127942282 19487162982 19982599329 25054923834 25691913423 29230744473 30622684686 32698798902 35726465467 39965198658 45934027029 51383826846 56141588591 58461488946 59947797987 71452930934 87692233419 91868054058 107179396401 112283177182 119895595974 137802081087 168424765773 175384466838 179843393961 214358792802 275604162174 321538189203 336849531546 359686787922 392991120137 505274297319 643076378406 785982240274 964614567609 1010548594638 1178973360411 1515822891957 1929229135218 2357946720822 3031645783914 3536920081233 7073840162466 10610760243699 21221520487398
• Sum of all divisors σ(n): 60245067456000
• Sum of proper divisors (its aliquot sum) s(n): 39023546968602
• 21221520487398 is an abundant number, because the sum of its proper divisors (39023546968602) is greater than itself. Its abundance is 17802026481204

Bases of 21221520487398

• Binary: 100110100110100000101001100001011001111100110₂
• Hexadecimal: 0x134D0530B3E6
• Base-36: 7IT15DHPI

Squares and roots of 21221520487398

• 21221520487398 squared (21221520487398²) is 450352931797053047476810404
• 21221520487398 cubed (21221520487398³) is 9557173968690915440110142758796517288792
• The square root of 21221520487398 is 4606682.1561073649
• The cube root of 21221520487398 is 27685.9118876953

Scales and comparisons

• 21,221,520,487,398 seconds is equal to 674,778 years, 36 weeks, 6 days, 2 hours, 3 minutes, 18 seconds.
• To count from 1 to 21,221,520,487,398 would take you about one million, six hundred eighty-six thousand, nine hundred forty-six 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 21221520487398 cubic inches would be around 2307.2 feet tall.

Recreational maths with 21221520487398

• 21221520487398 backwards is 89378402512212
• 21221520487398 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 21221520487398's digits is 54
• More coming soon!