21055318011

Names of 21055318011

• Cardinal: 21055318011 can be written as Twenty-one billion, fifty-five million, three hundred eighteen thousand and eleven.

Scientific notation

• Scientific notation: 2.1055318011 × 10¹⁰

Factors of 21055318011

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 413

Divisors of 21055318011

• Number of divisors d(n): 96
• Complete list of divisors:
  1 3 7 9 13 21 27 39 63 91 107 117 189 273 283 321 351 749 819 849 963 1391 1981 2247 2457 2547 2889 3679 4173 5943 6741 7641 9737 11037 12519 17829 20223 25753 29211 30281 33111 37557 53487 77259 80089 87633 90843 99333 211967 231777 240267 262899 272529 393653 560623 635901 695331 720801 817587 1041157 1180959 1681869 1907703 2162403 2755571 3123471 3542877 5045607 5723109 7288099 8266713 8569523 9370413 10628631 15136821 21864297 24800139 25708569 28111239 59986661 65592891 74400417 77125707 111403799 179959983 196778673 231377121 334211397 539879949 779826593 1002634191 1619639847 2339479779 3007902573 7018439337 21055318011
• Sum of all divisors σ(n): 38887672320
• Sum of proper divisors (its aliquot sum) s(n): 17832354309
• 21055318011 is a deficient number, because the sum of its proper divisors (17832354309) is less than itself. Its deficiency is 3222963702

Bases of 21055318011

• Binary: 10011100110111111101010011111111011₂
• Hexadecimal: 0x4E6FEA7FB
• Base-36: 9O7SJCR

Squares and roots of 21055318011

• 21055318011 squared (21055318011²) is 443326416544340996121
• 21055318011 cubed (21055318011³) is 9334378683018151355752172435331
• The square root of 21055318011 is 145104.5072042905
• The cube root of 21055318011 is 2761.3445634479

Scales and comparisons

• 21,055,318,011 seconds is equal to 669 years, 25 weeks, 4 days, 19 hours, 26 minutes, 51 seconds.
• To count from 1 to 21,055,318,011 would take you about one thousand, three hundred thirty-eight 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 21055318011 cubic inches would be around 230.1 feet tall.

Recreational maths with 21055318011

• 21055318011 backwards is 11081355012
• 21055318011 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21055318011's digits is 27
• More coming soon!