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12131132121210 = 23517104971226601
BaseRepresentation
bin1011000010000111111111…
…0100100010000001111010
31120221201120110022001202110
42300201333310202001322
53042224024310334320
641444544250313150
72361305522444544
oct260417764420172
946851513261673
1012131132121210
1139578699083a3
12143b1177287b6
1369cc64cb070b
142dd215588694
1516085a3625e0
hexb087fd2207a

12131132121210 has 64 divisors (see below), whose sum is σ = 30827777226624. Its totient is φ = 3044633856000.

The previous prime is 12131132121191. The next prime is 12131132121211. The reversal of 12131132121210 is 1212123113121.

It is not an unprimeable number, because it can be changed into a prime (12131132121211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53421910 + ... + 53648510.

It is an arithmetic number, because the mean of its divisors is an integer number (481684019166).

Almost surely, 212131132121210 is an apocalyptic number.

12131132121210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12131132121210 is an abundant number, since it is smaller than the sum of its proper divisors (18696645105414).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12131132121210 is a wasteful number, since it uses less digits than its factorization.

12131132121210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331599.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 12131132121210 its reverse (1212123113121), we get a palindrome (13343255234331).

The spelling of 12131132121210 in words is "twelve trillion, one hundred thirty-one billion, one hundred thirty-two million, one hundred twenty-one thousand, two hundred ten".

Divisors: 1 2 3 5 6 10 15 17 30 34 51 85 102 170 255 510 104971 209942 226601 314913 453202 524855 629826 679803 1049710 1133005 1359606 1574565 1784507 2266010 3149130 3399015 3569014 3852217 5353521 6798030 7704434 8922535 10707042 11556651 17845070 19261085 23113302 26767605 38522170 53535210 57783255 115566510 23786533571 47573067142 71359600713 118932667855 142719201426 237865335710 356798003565 404371070707 713596007130 808742141414 1213113212121 2021855353535 2426226424242 4043710707070 6065566060605 12131132121210