21216326878100

Names of 21216326878100

• Cardinal: 21216326878100 can be written as Twenty-one trillion, two hundred sixteen billion, three hundred twenty-six million, eight hundred seventy-eight thousand, one hundred.

Scientific notation

• Scientific notation: 2.12163268781 × 10¹³

Factors of 21216326878100

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 4170562

Divisors of 21216326878100

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 4 5 10 20 23 25 46 50 92 100 115 230 460 575 1150 2213 2300 4426 8852 11065 22130 44260 50899 55325 101798 110650 203596 221300 254495 508990 1017980 1272475 2544950 4168319 5089900 8336638 16673276 20841595 41683190 83366380 95871337 104207975 191742674 208415950 383485348 416831900 479356685 958713370 1917426740 2396783425 4793566850 9224489947 9587133700 18448979894 36897959788 46122449735 92244899470 184489798940 212163268781 230612248675 424326537562 461224497350 848653075124 922448994700 1060816343905 2121632687810 4243265375620 5304081719525 10608163439050 21216326878100
• Sum of all divisors σ(n): 48062863779840
• Sum of proper divisors (its aliquot sum) s(n): 26846536901740
• 21216326878100 is an abundant number, because the sum of its proper divisors (26846536901740) is greater than itself. Its abundance is 5630210023640

Bases of 21216326878100

• Binary: 100110100101111001111101000001000001110010100₂
• Hexadecimal: 0x134BCFA08394
• Base-36: 7IQN98F4K

Squares and roots of 21216326878100

• 21216326878100 squared (21216326878100²) is 450132526198388492259610000
• 21216326878100 cubed (21216326878100³) is 9550158814289922181233297446023541000000
• The square root of 21216326878100 is 4606118.4177244073
• The cube root of 21216326878100 is 27683.6531500597

Scales and comparisons

• 21,216,326,878,100 seconds is equal to 674,613 years, 29 weeks, 3 days, 20 hours, 48 minutes, 20 seconds.
• To count from 1 to 21,216,326,878,100 would take you about one million, six hundred eighty-six thousand, five hundred thirty-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 21216326878100 cubic inches would be around 2307 feet tall.

Recreational maths with 21216326878100

• 21216326878100 backwards is 00187862361212
• The number of decimal digits it has is: 14
• The sum of 21216326878100's digits is 47
• More coming soon!