1221868131

Names of 1221868131

• Cardinal: 1221868131 can be written as One billion, two hundred twenty-one million, eight hundred sixty-eight thousand, one hundred thirty-one.

Scientific notation

• Scientific notation: 1.221868131 × 10⁹

Factors of 1221868131

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 1800

Divisors of 1221868131

• Number of divisors d(n): 64
• Complete list of divisors:
  1 3 11 19 31 33 37 57 93 111 209 341 407 589 627 703 1023 1147 1221 1699 1767 2109 3441 5097 6479 7733 12617 18689 19437 21793 23199 32281 37851 52669 56067 62863 65379 96843 158007 188589 239723 355091 579359 691493 719169 1000711 1065273 1194397 1738077 1948753 2074479 3002133 3583191 5846259 11007821 13138367 21436283 33023463 37026307 39415101 64308849 111078921 407289377 1221868131
• Sum of all divisors σ(n): 1984512000
• Sum of proper divisors (its aliquot sum) s(n): 762643869
• 1221868131 is a deficient number, because the sum of its proper divisors (762643869) is less than itself. Its deficiency is 459224262

Bases of 1221868131

• Binary: 1001000110101000011101001100011₂
• Hexadecimal: 0x48D43A63
• Base-36: K7GVHF

Squares and roots of 1221868131

• 1221868131 squared (1221868131²) is 1492961729553433161
• 1221868131 cubed (1221868131³) is 1824202358143980841064492091
• The square root of 1221868131 is 34955.2303811605
• The cube root of 1221868131 is 1069.0748491395

Scales and comparisons

• 1,221,868,131 seconds is equal to 38 years, 44 weeks, 1 day, 23 hours, 48 minutes, 51 seconds.
• To count from 1 to 1,221,868,131 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 1221868131 cubic inches would be around 89.1 feet tall.

Recreational maths with 1221868131

• 1221868131 backwards is 1318681221
• 1221868131 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 1221868131's digits is 33
• More coming soon!