21213009216

Names of 21213009216

• Cardinal: 21213009216 can be written as Twenty-one billion, two hundred thirteen million, nine thousand, two hundred sixteen.

Scientific notation

• Scientific notation: 2.1213009216 × 10¹⁰

Factors of 21213009216

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 372

Divisors of 21213009216

• Number of divisors d(n): 336
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 21 24 27 28 32 36 42 48 54 56 63 64 72 79 84 96 108 112 126 144 158 168 189 192 216 224 237 252 281 288 316 336 378 432 448 474 504 553 562 576 632 672 711 756 843 864 948 1008 1106 1124 1264 1344 1422 1512 1659 1686 1728 1896 1967 2016 2133 2212 2248 2528 2529 2844 3024 3318 3372 3792 3934 4032 4266 4424 4496 4977 5056 5058 5688 5901 6048 6241 6636 6744 7584 7587 7868 8532 8848 8992 9954 10116 11376 11802 12096 12482 13272 13488 14931 15168 15174 15736 17064 17696 17703 17984 18723 19908 20232 22199 22752 23604 24964 26544 26976 29862 30348 31472 34128 35392 35406 37446 39816 40464 43687 44398 45504 47208 49928 53088 53109 53952 56169 59724 60696 62944 66597 68256 70812 74892 79632 80928 87374 88796 94416 99856 106176 106218 112338 119448 121392 125888 131061 133194 136512 141624 149784 155393 159264 161856 168507 174748 177592 188832 199712 199791 212436 224676 238896 242784 262122 266388 283248 299568 310786 318528 337014 349496 355184 377664 393183 399424 399582 424872 449352 466179 477792 485568 524244 532776 566496 599136 599373 621572 674028 698992 710368 786366 799164 849744 898704 932358 955584 1048488 1065552 1132992 1179549 1198272 1198746 1243144 1348056 1397984 1398537 1420736 1572732 1598328 1699488 1753721 1797408 1864716 2096976 2131104 2359098 2397492 2486288 2696112 2795968 2797074 3145464 3196656 3398976 3507442 3594816 3729432 4193952 4195611 4262208 4718196 4794984 4972576 5261163 5392224 5594148 6290928 6393312 7014884 7458864 8387904 8391222 9436392 9589968 9945152 10522326 10784448 11188296 12276047 12581856 12786624 14029768 14917728 15783489 16782444 18872784 19179936 21044652 22376592 24552094 25163712 28059536 29835456 31566978 33564888 36828141 37745568 38359872 42089304 44753184 47350467 49104188 56119072 63133956 67129776 73656282 75491136 84178608 89506368 94700934 98208376 110484423 112238144 126267912 134259552 147312564 168357216 189401868 196416752 220968846 252535824 268519104 294625128 331453269 336714432 378803736 392833504 441937692 505071648 589250256 662906538 757607472 785667008 883875384 1010143296 1178500512 1325813076 1515214944 1767750768 2357001024 2651626152 3030429888 3535501536 5303252304 7071003072 10606504608 21213009216
• Sum of all divisors σ(n): 72441694080
• Sum of proper divisors (its aliquot sum) s(n): 51228684864
• 21213009216 is an abundant number, because the sum of its proper divisors (51228684864) is greater than itself. Its abundance is 30015675648

Bases of 21213009216

• Binary: 10011110000011001001101010101000000₂
• Hexadecimal: 0x4F064D540
• Base-36: 9QTOEO0

Squares and roots of 21213009216

• 21213009216 squared (21213009216²) is 449991759998100934656
• 21213009216 cubed (21213009216³) is 9545679351963775269355941789696
• The square root of 21213009216 is 145646.8647654317
• The cube root of 21213009216 is 2768.2210082257

Scales and comparisons

• 21,213,009,216 seconds is equal to 674 years, 26 weeks, 2 days, 22 hours, 33 minutes, 36 seconds.
• To count from 1 to 21,213,009,216 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 21213009216 cubic inches would be around 230.7 feet tall.

Recreational maths with 21213009216

• 21213009216 backwards is 61290031212
• 21213009216 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21213009216's digits is 27
• More coming soon!