21123700020

Names of 21123700020

• Cardinal: 21123700020 can be written as Twenty-one billion, one hundred twenty-three million, seven hundred thousand and twenty.

Scientific notation

• Scientific notation: 2.112370002 × 10¹⁰

Factors of 21123700020

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 190

Divisors of 21123700020

• Number of divisors d(n): 270
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 15 18 20 23 27 30 36 45 46 54 60 69 81 90 92 108 115 135 138 157 162 180 207 230 270 276 314 324 345 405 414 460 471 529 540 621 628 690 785 810 828 942 1035 1058 1242 1380 1413 1570 1587 1620 1863 1884 2070 2116 2355 2484 2645 2826 3105 3140 3174 3611 3726 4140 4239 4710 4761 5290 5652 6210 6348 7065 7222 7452 7935 8478 9315 9420 9522 10580 10833 12420 12717 14130 14283 14444 15870 16956 18055 18630 19044 21195 21666 23805 24649 25434 28260 28566 31740 32499 36110 37260 42390 42849 43332 47610 49298 50868 54165 57132 63585 64998 71415 72220 73947 83053 84780 85698 95220 97497 98596 108330 123245 127170 129996 142830 147894 162495 166106 171396 194994 214245 216660 221841 246490 249159 254340 285660 292491 295788 324990 332212 369735 389988 415265 428490 443682 487485 492980 498318 566927 584982 649980 665523 739470 747477 830530 856980 887364 974970 996636 1109205 1133854 1169964 1245795 1331046 1462455 1478940 1494954 1661060 1700781 1949940 1996569 2218410 2242431 2267708 2491590 2662092 2834635 2924910 2989908 3327615 3401562 3737385 3993138 4436820 4484862 4983180 5102343 5669270 5849820 6655230 6727293 6803124 7474770 7986276 8503905 8969724 9982845 10204686 11212155 11338540 13039321 13310460 13454586 14949540 15307029 17007810 19965690 20409372 22424310 25511715 26078642 26909172 30614058 33636465 34015620 39117963 39931380 44848620 45921087 51023430 52157284 61228116 65196605 67272930 76535145 78235926 91842174 102046860 117353889 130393210 134545860 153070290 156471852 183684348 195589815 229605435 234707778 260786420 306140580 352061667 391179630 459210870 469415556 586769445 704123334 782359260 918421740 1056185001 1173538890 1408246668 1760308335 2112370002 2347077780 3520616670 4224740004 5280925005 7041233340 10561850010 21123700020
• Sum of all divisors σ(n): 69716253222
• Sum of proper divisors (its aliquot sum) s(n): 48592553202
• 21123700020 is an abundant number, because the sum of its proper divisors (48592553202) is greater than itself. Its abundance is 27468853182

Bases of 21123700020

• Binary: 10011101011000100100001010100110100₂
• Hexadecimal: 0x4EB121534
• Base-36: 9PCI790

Squares and roots of 21123700020

• 21123700020 squared (21123700020²) is 446210702534948000400
• 21123700020 cubed (21123700020³) is 9425621026061695126748440008000
• The square root of 21123700020 is 145339.9464015313
• The cube root of 21123700020 is 2764.3307011659

Scales and comparisons

• 21,123,700,020 seconds is equal to 671 years, 34 weeks, 5 days, 6 hours, 27 minutes.
• To count from 1 to 21,123,700,020 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 21123700020 cubic inches would be around 230.4 feet tall.

Recreational maths with 21123700020

• 21123700020 backwards is 02000732112
• 21123700020 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21123700020's digits is 18
• More coming soon!