21208531242912

Names of 21208531242912

• Cardinal: 21208531242912 can be written as Twenty-one trillion, two hundred eight billion, five hundred thirty-one million, two hundred forty-two thousand, nine hundred twelve.

Scientific notation

• Scientific notation: 2.1208531242912 × 10¹³

Factors of 21208531242912

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 568002

Divisors of 21208531242912

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 6 8 12 13 16 24 26 32 39 48 52 78 96 104 156 173 208 312 346 416 519 624 692 1038 1248 1384 2076 2249 2768 4152 4498 5536 6747 8304 8996 13494 16608 17992 26988 29929 35984 53976 59858 71968 89787 107952 119716 179574 215904 239432 359148 389077 478864 567811 718296 778154 957728 1135622 1167231 1436592 1556308 1703433 2271244 2334462 2873184 3112616 3406866 4542488 4668924 6225232 6813732 7381543 9084976 9337848 12450464 13627464 14763086 18169952 18675696 22144629 27254928 29526172 37351392 44289258 54509856 59052344 88578516 98231303 118104688 177157032 196462606 236209376 294693909 354314064 392925212 589387818 708628128 785850424 1178775636 1277006939 1571700848 2357551272 2554013878 3143401696 3831020817 4715102544 5108027756 7662041634 9430205088 10216055512 15324083268 16994015419 20432111024 30648166536 33988030838 40864222048 50982046257 61296333072 67976061676 101964092514 122592666144 135952123352 203928185028 220922200447 271904246704 407856370056 441844400894 543808493408 662766601341 815712740112 883688801788 1325533202682 1631425480224 1767377603576 2651066405364 3534755207152 5302132810728 7069510414304 10604265621456 21208531242912
• Sum of all divisors σ(n): 60303555875808
• Sum of proper divisors (its aliquot sum) s(n): 39095024632896
• 21208531242912 is an abundant number, because the sum of its proper divisors (39095024632896) is greater than itself. Its abundance is 17886493389984

Bases of 21208531242912

• Binary: 100110100100111111110111110001000111110100000₂
• Hexadecimal: 0x1349FEF88FA0
• Base-36: 7IN2BWWIO

Squares and roots of 21208531242912

• 21208531242912 squared (21208531242912²) is 449801797481574423550239744
• 21208531242912 cubed (21208531242912³) is 9539635475005947320516596041491900694528
• The square root of 21208531242912 is 4605272.1138833913
• The cube root of 21208531242912 is 27680.2620808519

Scales and comparisons

• 21,208,531,242,912 seconds is equal to 674,365 years, 35 weeks, 6 days, 14 hours, 35 minutes, 12 seconds.
• To count from 1 to 21,208,531,242,912 would take you about one million, six hundred eighty-five thousand, nine hundred fourteen 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 21208531242912 cubic inches would be around 2306.7 feet tall.

Recreational maths with 21208531242912

• 21208531242912 backwards is 21924213580212
• The number of decimal digits it has is: 14
• The sum of 21208531242912's digits is 42
• More coming soon!