221665832655288021

Names of 221665832655288021

• Cardinal: 221665832655288021 can be written as Two hundred twenty-one quadrillion, six hundred sixty-five trillion, eight hundred thirty-two billion, six hundred fifty-five million, two hundred eighty-eight thousand and twenty-one.

Scientific notation

• Scientific notation: 2.21665832655288021 × 10¹⁷

Factors of 221665832655288021

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 24604932029703

Divisors of 221665832655288021

• Number of divisors d(n): 48
• Complete list of divisors:
  1 3 7 9 11 13 21 33 39 63 77 91 99 117 143 231 273 429 693 819 1001 1287 3003 9009 24604932029669 73814796089007 172234524207683 221444388267021 270654252326359 319864116385697 516703572623049 811962756979077 959592349157091 1550110717869147 1894579766284513 2239048814699879 2435888270937231 2878777047471273 3518505280242667 5683739298853539 6717146444099637 10555515840728001 17051217896560617 20151439332298911 24629536961698669 31666547522184003 73888610885096007 221665832655288021
• Sum of all divisors σ(n): 429897372422394240
• Sum of proper divisors (its aliquot sum) s(n): 208231539767106219
• 221665832655288021 is a deficient number, because the sum of its proper divisors (208231539767106219) is less than itself. Its deficiency is 13434292888181802

Bases of 221665832655288021

• Binary: 1100010011100000111110011001111110010000100111011011010101₂
• Hexadecimal: 0x31383E67E4276D5
• Base-36: 1OMLZ9PSRFF9

Squares and roots of 221665832655288021

• 221665832655288021 squared (221665832655288021²) is 49135741366762153178599334466096441
• 221665832655288021 cubed (221665832655288021³) is 10891715023198212551039072603176760820709340418033261
• The square root of 221665832655288021 is 470814010.6828682949
• The cube root of 221665832655288021 is 605200.9283260681

Scales and comparisons

• 221,665,832,655,288,021 seconds is equal to 7,048,287,820 years, 51 weeks, 6 days, 14 hours, 40 minutes, 21 seconds.
• To count from 1 to 221,665,832,655,288,021 would take you about twenty-one billion, one hundred forty-four million, eight hundred sixty-three thousand, four hundred sixty-two 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 221665832655288021 cubic inches would be around 50433.4 feet tall.

Recreational maths with 221665832655288021

• 221665832655288021 backwards is 120882556238566122
• The number of decimal digits it has is: 18
• The sum of 221665832655288021's digits is 72
• More coming soon!