121557172821

Names of 121557172821

• Cardinal: 121557172821 can be written as One hundred twenty-one billion, five hundred fifty-seven million, one hundred seventy-two thousand, eight hundred twenty-one.

Scientific notation

• Scientific notation: 1.21557172821 × 10¹¹

Factors of 121557172821

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 956

Divisors of 121557172821

• Number of divisors d(n): 96
• Complete list of divisors:
  1 3 7 21 29 49 87 147 203 293 307 317 609 879 921 951 1421 2051 2149 2219 4263 6153 6447 6657 8497 8903 9193 14357 15043 15533 25491 26709 27579 43071 45129 46599 59479 62321 64351 89951 92881 97319 178437 186963 193053 269853 278643 291957 416353 436247 450457 629657 650167 681233 1249059 1308741 1351371 1888971 1950501 2043699 2608579 2693549 2822251 4407599 4551169 4768631 7825737 8080647 8466753 13222797 13653507 14305893 18260053 18854843 19755757 28514467 54780159 56564529 59267271 85543401 127820371 131983901 138290299 199601269 383461113 395951703 414870897 598803807 826919543 1397208883 2480758629 4191626649 5788436801 17365310403 40519057607 121557172821
• Sum of all divisors σ(n): 196961466240
• Sum of proper divisors (its aliquot sum) s(n): 75404293419
• 121557172821 is a deficient number, because the sum of its proper divisors (75404293419) is less than itself. Its deficiency is 46152879402

Bases of 121557172821

• Binary: 1110001001101010111110100001001010101₂
• Hexadecimal: 0x1C4D5F4255
• Base-36: 1JUC02TX

Squares and roots of 121557172821

• 121557172821 squared (121557172821²) is 14776146264234461098041
• 121557172821 cubed (121557172821³) is 1796146565069921918958371261543661
• The square root of 121557172821 is 348650.5023960241
• The cube root of 121557172821 is 4953.6676259863

Scales and comparisons

• 121,557,172,821 seconds is equal to 3,865 years, 7 weeks, 2 days, 17 hours, 20 minutes, 21 seconds.
• To count from 1 to 121,557,172,821 would take you about seven thousand, seven hundred thirty 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 121557172821 cubic inches would be around 412.8 feet tall.

Recreational maths with 121557172821

• 121557172821 backwards is 128271755121
• The number of decimal digits it has is: 12
• The sum of 121557172821's digits is 42
• More coming soon!