21065329321

Names of 21065329321

• Cardinal: 21065329321 can be written as Twenty-one billion, sixty-five million, three hundred twenty-nine thousand, three hundred twenty-one.

Scientific notation

• Scientific notation: 2.1065329321 × 10¹⁰

Factors of 21065329321

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 145139

Divisors of 21065329321

• Number of divisors d(n): 3
• Complete list of divisors:
  1 145139 21065329321
• Sum of all divisors σ(n): 21065474461
• Sum of proper divisors (its aliquot sum) s(n): 145140
• 21065329321 is a deficient number, because the sum of its proper divisors (145140) is less than itself. Its deficiency is 21065184181

Bases of 21065329321

• Binary: 10011100111100101110110101010101001₂
• Hexadecimal: 0x4E7976AA9
• Base-36: 9ODR44P

Squares and roots of 21065329321

• 21065329321 squared (21065329321²) is 443748099402182321041
• 21065329321 cubed (21065329321³) is 9347699849474813818812812543161
• 21065329321 is a perfect square number. Its square root is 145139
• The cube root of 21065329321 is 2761.7821456321

Scales and comparisons

• 21,065,329,321 seconds is equal to 669 years, 42 weeks, 1 day, 16 hours, 22 minutes, 1 second.
• To count from 1 to 21,065,329,321 would take you about one thousand, three hundred thirty-nine 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 21065329321 cubic inches would be around 230.1 feet tall.

Recreational maths with 21065329321

• 21065329321 backwards is 12392356012
• The number of decimal digits it has is: 11
• The sum of 21065329321's digits is 34
• More coming soon!