21231441216

Names of 21231441216

• Cardinal: 21231441216 can be written as Twenty-one billion, two hundred thirty-one million, four hundred forty-one thousand, two hundred sixteen.

Scientific notation

• Scientific notation: 2.1231441216 × 10¹⁰

Factors of 21231441216

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 36860146

Divisors of 21231441216

• Number of divisors d(n): 42
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 32 36 48 64 72 96 144 192 288 576 36860141 73720282 110580423 147440564 221160846 294881128 331741269 442321692 589762256 663482538 884643384 1179524512 1326965076 1769286768 2359049024 2653930152 3538573536 5307860304 7077147072 10615720608 21231441216
• Sum of all divisors σ(n): 60856094442
• Sum of proper divisors (its aliquot sum) s(n): 39624653226
• 21231441216 is an abundant number, because the sum of its proper divisors (39624653226) is greater than itself. Its abundance is 18393212010

Bases of 21231441216

• Binary: 10011110001011111100001010101000000₂
• Hexadecimal: 0x4F17E1540
• Base-36: 9R4NGW0

Squares and roots of 21231441216

• 21231441216 squared (21231441216²) is 450774096108463558656
• 21231441216 cubed (21231441216³) is 9570583723222378405683031965696
• The square root of 21231441216 is 145710.1273625137
• The cube root of 21231441216 is 2769.0225459049

Scales and comparisons

• 21,231,441,216 seconds is equal to 675 years, 4 weeks, 6 days, 6 hours, 33 minutes, 36 seconds.
• To count from 1 to 21,231,441,216 would take you about one thousand, three hundred fifty 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 21231441216 cubic inches would be around 230.8 feet tall.

Recreational maths with 21231441216

• 21231441216 backwards is 61214413212
• The number of decimal digits it has is: 11
• The sum of 21231441216's digits is 27
• More coming soon!