21011994750420

Names of 21011994750420

• Cardinal: 21011994750420 can be written as Twenty-one trillion, eleven billion, nine hundred ninety-four million, seven hundred fifty thousand, four hundred twenty.

Scientific notation

• Scientific notation: 2.101199475042 × 10¹³

Factors of 21011994750420

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 352037

Divisors of 21011994750420

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 15 18 20 30 36 45 53 60 90 106 159 180 212 265 318 477 530 636 795 954 1060 1590 1908 2385 3180 4770 6373 9540 12746 19119 25492 31865 38238 57357 63730 76476 95595 114714 127460 191190 229428 286785 337769 345601 382380 573570 675538 691202 1013307 1036803 1147140 1351076 1382404 1688845 1728005 2026614 2073606 3039921 3110409 3377690 3456010 4053228 4147212 5066535 5184015 6079842 6220818 6755380 6912020 10133070 10368030 12159684 12441636 15199605 15552045 18316853 20266140 20736060 30399210 31104090 36633706 54950559 60798420 62208180 73267412 91584265 109901118 164851677 183168530 219802236 274752795 329703354 366337060 549505590 659406708 824258385 1099011180 1648516770 2202515173 3297033540 4405030346 6607545519 8810060692 11012575865 13215091038 19822636557 22025151730 26430182076 33037727595 39645273114 44050303460 66075455190 79290546228 99113182785 116733304169 132150910380 198226365570 233466608338 350199912507 396452731140 466933216676 583666520845 700399825014 1050599737521 1167333041690 1400799650028 1750999562535 2101199475042 2334666083380 3501999125070 4202398950084 5252998687605 7003998250140 10505997375210 21011994750420
• Sum of all divisors σ(n): 64949334991632
• Sum of proper divisors (its aliquot sum) s(n): 43937340241212
• 21011994750420 is an abundant number, because the sum of its proper divisors (43937340241212) is greater than itself. Its abundance is 22925345490792

Bases of 21011994750420

• Binary: 100110001110000111100011110111010110111010100₂
• Hexadecimal: 0x131C3C7BADD4
• Base-36: 7G4RZ5SD0

Squares and roots of 21011994750420

• 21011994750420 squared (21011994750420²) is 441503923391677638090176400
• 21011994750420 cubed (21011994750420³) is 9276878120595764373067691151371774088000
• The square root of 21011994750420 is 4583884.2426941805
• The cube root of 21011994750420 is 27594.4935587835

Scales and comparisons

• 21,011,994,750,420 seconds is equal to 668,116 years, 22 weeks, 5 days, 16 hours, 27 minutes.
• To count from 1 to 21,011,994,750,420 would take you about one million, six hundred seventy thousand, two hundred ninety-one 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 21011994750420 cubic inches would be around 2299.5 feet tall.

Recreational maths with 21011994750420

• 21011994750420 backwards is 02405749911012
• 21011994750420 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 21011994750420's digits is 45
• More coming soon!