21221532990

Names of 21221532990

• Cardinal: 21221532990 can be written as Twenty-one billion, two hundred twenty-one million, five hundred thirty-two thousand, nine hundred ninety.

Scientific notation

• Scientific notation: 2.122153299 × 10¹⁰

Factors of 21221532990

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 16685

Divisors of 21221532990

• Number of divisors d(n): 216
• Complete list of divisors:
  1 2 3 5 6 7 9 10 14 15 17 18 21 30 34 35 42 45 49 51 63 70 85 90 98 102 105 119 126 147 153 170 210 238 245 255 289 294 306 315 357 441 490 510 578 595 630 714 735 765 833 867 882 1071 1190 1445 1470 1530 1666 1734 1785 2023 2142 2205 2499 2601 2890 3570 4046 4165 4335 4410 4998 5202 5355 6069 7497 8330 8670 10115 10710 12138 12495 13005 14161 14994 16651 18207 20230 24990 26010 28322 30345 33302 36414 37485 42483 49953 60690 70805 74970 83255 84966 91035 99906 116557 127449 141610 149859 166510 182070 212415 233114 249765 254898 283067 299718 349671 424830 499530 566134 582785 637245 699342 749295 815899 849201 1049013 1165570 1274490 1415335 1498590 1631798 1698402 1748355 1981469 2098026 2447697 2547603 2830670 3496710 3962938 4079495 4246005 4812139 4895394 5095206 5245065 5944407 7343091 8158990 8492010 9624278 9907345 10490130 11888814 12238485 12738015 13870283 14436417 14686182 17833221 19814690 24060695 24476970 25476030 27740566 28872834 29722035 33684973 35666442 36715455 41610849 43309251 48121390 59444070 67369946 69351415 72182085 73430910 83221698 86618502 89166105 101054919 124832547 138702830 144364170 168424865 178332210 202109838 208054245 216546255 235794811 249665094 303164757 336849730 416108490 433092510 471589622 505274595 606329514 624162735 707384433 1010549190 1178974055 1248325470 1414768866 1515823785 2122153299 2357948110 3031647570 3536922165 4244306598 7073844330 10610766495 21221532990
• Sum of all divisors σ(n): 68186043432
• Sum of proper divisors (its aliquot sum) s(n): 46964510442
• 21221532990 is an abundant number, because the sum of its proper divisors (46964510442) is greater than itself. Its abundance is 25742977452

Bases of 21221532990

• Binary: 10011110000111001101110010100111110₂
• Hexadecimal: 0x4F0E6E53E
• Base-36: 9QYR3NI

Squares and roots of 21221532990

• 21221532990 squared (21221532990²) is 450353462445658340100
• 21221532990 cubed (21221532990³) is 9557190860451264546700789899000
• The square root of 21221532990 is 145676.1236098765
• The cube root of 21221532990 is 2768.5917324723

Scales and comparisons

• 21,221,532,990 seconds is equal to 674 years, 40 weeks, 3 days, 14 hours, 16 minutes, 30 seconds.
• To count from 1 to 21,221,532,990 would take you about one thousand, three hundred forty-nine 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 21221532990 cubic inches would be around 230.7 feet tall.

Recreational maths with 21221532990

• 21221532990 backwards is 09923512212
• The number of decimal digits it has is: 11
• The sum of 21221532990's digits is 36
• More coming soon!