21987000536121

Names of 21987000536121

• Cardinal: 21987000536121 can be written as Twenty-one trillion, nine hundred eighty-seven billion, five hundred thirty-six thousand, one hundred twenty-one.

Scientific notation

• Scientific notation: 2.1987000536121 × 10¹³

Factors of 21987000536121

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 11525447

Divisors of 21987000536121

• Number of divisors d(n): 48
• Complete list of divisors:
  1 3 9 17 37 51 111 153 333 337 629 1011 1887 3033 5661 5729 12469 17187 37407 51561 112221 211973 635919 1907757 11525053 34575159 103725477 195925901 426426961 587777703 1279280883 1763333109 3837842649 3883942861 7249258337 11651828583 21747775011 34955485749 65243325033 66027028637 143705885857 198081085911 431117657571 594243257733 1293352972713 2443000059569 7329000178707 21987000536121
• Sum of all divisors σ(n): 34638503696784
• Sum of proper divisors (its aliquot sum) s(n): 12651503160663
• 21987000536121 is a deficient number, because the sum of its proper divisors (12651503160663) is less than itself. Its deficiency is 9335497375458

Bases of 21987000536121

• Binary: 100111111111100111111010110110100110000111001₂
• Hexadecimal: 0x13FF3F5B4C39
• Base-36: 7SKOSFJG9

Squares and roots of 21987000536121

• 21987000536121 squared (21987000536121²) is 483428192575385141425726641
• 21987000536121 cubed (21987000536121³) is 10629135929330999136235509061968992499561
• The square root of 21987000536121 is 4689029.8075530509
• The cube root of 21987000536121 is 28014.8732784101

Scales and comparisons

• 21,987,000,536,121 seconds is equal to 699,118 years, 31 weeks, 3 days, 20 hours, 55 minutes, 21 seconds.
• To count from 1 to 21,987,000,536,121 would take you about one million, seven hundred forty-seven thousand, seven hundred ninety-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 21987000536121 cubic inches would be around 2334.6 feet tall.

Recreational maths with 21987000536121

• 21987000536121 backwards is 12163500078912
• The number of decimal digits it has is: 14
• The sum of 21987000536121's digits is 45
• More coming soon!