1221888900

Names of 1221888900

• Cardinal: 1221888900 can be written as One billion, two hundred twenty-one million, eight hundred eighty-eight thousand, nine hundred.

Scientific notation

• Scientific notation: 1.2218889 × 10⁹

Factors of 1221888900

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 206

Divisors of 1221888900

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 5 6 10 12 15 20 25 29 30 50 58 60 75 87 100 116 145 150 167 174 290 300 334 348 435 501 580 668 725 835 841 870 1002 1450 1670 1682 1740 2004 2175 2505 2523 2900 3340 3364 4175 4205 4350 4843 5010 5046 8350 8410 8700 9686 10020 10092 12525 12615 14529 16700 16820 19372 21025 24215 24389 25050 25230 29058 42050 48430 48778 50100 50460 58116 63075 72645 73167 84100 96860 97556 121075 121945 126150 140447 145290 146334 242150 243890 252300 280894 290580 292668 363225 365835 421341 484300 487780 561788 609725 702235 726450 731670 842682 1219450 1404470 1452900 1463340 1685364 1829175 2106705 2438900 2808940 3511175 3658350 4072963 4213410 7022350 7316700 8145926 8426820 10533525 12218889 14044700 16291852 20364815 21067050 24437778 40729630 42134100 48875556 61094445 81459260 101824075 122188890 203648150 244377780 305472225 407296300 610944450 1221888900
• Sum of all divisors σ(n): 3683514240
• Sum of proper divisors (its aliquot sum) s(n): 2461625340
• 1221888900 is an abundant number, because the sum of its proper divisors (2461625340) is greater than itself. Its abundance is 1239736440

Bases of 1221888900

• Binary: 1001000110101001000101110000100₂
• Hexadecimal: 0x48D48B84
• Base-36: K7HBIC

Squares and roots of 1221888900

• 1221888900 squared (1221888900²) is 1493012483943210000
• 1221888900 cubed (1221888900³) is 1824295381691636529369000000
• The square root of 1221888900 is 34955.5274599027
• The cube root of 1221888900 is 1069.0809063917

Scales and comparisons

• 1,221,888,900 seconds is equal to 38 years, 44 weeks, 2 days, 5 hours, 35 minutes.
• To count from 1 to 1,221,888,900 would take you about seventy-seven 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 1221888900 cubic inches would be around 89.1 feet tall.

Recreational maths with 1221888900

• 1221888900 backwards is 0098881221
• The number of decimal digits it has is: 10
• The sum of 1221888900's digits is 39
• More coming soon!