21123205000

Names of 21123205000

• Cardinal: 21123205000 can be written as Twenty-one billion, one hundred twenty-three million, two hundred five thousand.

Scientific notation

• Scientific notation: 2.1123205 × 10¹⁰

Factors of 21123205000

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 553

Divisors of 21123205000

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 4 5 8 10 20 25 40 50 97 100 125 194 200 250 388 449 485 500 625 776 898 970 1000 1250 1796 1940 2245 2425 2500 3592 3880 4490 4850 5000 8980 9409 9700 11225 12125 17960 18818 19400 22450 24250 37636 43553 44900 47045 48500 56125 60625 75272 87106 89800 94090 97000 112250 121250 174212 188180 217765 224500 235225 242500 280625 348424 376360 435530 449000 470450 485000 561250 871060 940900 1088825 1122500 1176125 1742120 1881800 2177650 2245000 2352250 4224641 4355300 4704500 5444125 5880625 8449282 8710600 9409000 10888250 11761250 16898564 21123205 21776500 23522500 27220625 33797128 42246410 43553000 47045000 54441250 84492820 105616025 108882500 168985640 211232050 217765000 422464100 528080125 844928200 1056160250 2112320500 2640400625 4224641000 5280801250 10561602500 21123205000
• Sum of all divisors σ(n): 50118527250
• Sum of proper divisors (its aliquot sum) s(n): 28995322250
• 21123205000 is an abundant number, because the sum of its proper divisors (28995322250) is greater than itself. Its abundance is 7872117250

Bases of 21123205000

• Binary: 10011101011000010101000011110001000₂
• Hexadecimal: 0x4EB0A8788
• Base-36: 9PC7LAG

Squares and roots of 21123205000

• 21123205000 squared (21123205000²) is 446189789472025000000
• 21123205000 cubed (21123205000³) is 9424958391924425840125000000000
• The square root of 21123205000 is 145338.2434185855
• The cube root of 21123205000 is 2764.3091075741

Scales and comparisons

• 21,123,205,000 seconds is equal to 671 years, 33 weeks, 6 days, 12 hours, 56 minutes, 40 seconds.
• To count from 1 to 21,123,205,000 would take you about one thousand, three hundred forty-three 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 21123205000 cubic inches would be around 230.4 feet tall.

Recreational maths with 21123205000

• 21123205000 backwards is 00050232112
• The number of decimal digits it has is: 11
• The sum of 21123205000's digits is 16
• More coming soon!