21022390081

Names of 21022390081

• Cardinal: 21022390081 can be written as Twenty-one billion, twenty-two million, three hundred ninety thousand and eighty-one.

Scientific notation

• Scientific notation: 2.1022390081 × 10¹⁰

Factors of 21022390081

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 287

Divisors of 21022390081

• Number of divisors d(n): 45
• Complete list of divisors:
  1 7 11 49 77 121 269 343 539 847 1883 2401 2959 3773 5929 13181 20713 26411 32549 41503 72361 92267 144991 227843 290521 506527 645869 795971 1014937 1594901 3545689 5571797 7104559 8755681 11164307 24819823 39002579 61289767 78150149 173738761 273018053 429028369 1911126371 3003198583 21022390081
• Sum of all divisors σ(n): 27057444323
• Sum of proper divisors (its aliquot sum) s(n): 6035054242
• 21022390081 is a deficient number, because the sum of its proper divisors (6035054242) is less than itself. Its deficiency is 14987335839

Bases of 21022390081

• Binary: 10011100101000010000011011101000001₂
• Hexadecimal: 0x4E5083741
• Base-36: 9NO6S01

Squares and roots of 21022390081

• 21022390081 squared (21022390081²) is 441940884717727186561
• 21022390081 cubed (21022390081³) is 9290653671278312491624002901441
• 21022390081 is a perfect square number. Its square root is 144991
• The cube root of 21022390081 is 2759.9043445547

Scales and comparisons

• 21,022,390,081 seconds is equal to 668 years, 23 weeks, 1 day, 16 hours, 48 minutes, 1 second.
• To count from 1 to 21,022,390,081 would take you about one thousand, three hundred thirty-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 21022390081 cubic inches would be around 230 feet tall.

Recreational maths with 21022390081

• 21022390081 backwards is 18009322012
• The number of decimal digits it has is: 11
• The sum of 21022390081's digits is 28
• More coming soon!