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12231231210212 = 2271725695863887
BaseRepresentation
bin1011000111111100111000…
…1100010000001011100100
31121022021221112101122120012
42301333032030100023210
53100344030142211322
642002541113225352
72401451211612350
oct261771614201344
947267845348505
1012231231210212
113996266172533
1214565b2702258
136a95281a50b1
14303dcd840460
15163268121ae2
hexb1fce3102e4

12231231210212 has 24 divisors (see below), whose sum is σ = 25901430799104. Its totient is φ = 4933605866112.

The previous prime is 12231231210169. The next prime is 12231231210257. The reversal of 12231231210212 is 21201213213221.

It is a super-2 number, since 2×122312312102122 (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12847931468 + ... + 12847932419.

It is an arithmetic number, because the mean of its divisors is an integer number (1079226283296).

Almost surely, 212231231210212 is an apocalyptic number.

It is an amenable number.

12231231210212 is an abundant number, since it is smaller than the sum of its proper divisors (13670199588892).

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

12231231210212 is a wasteful number, since it uses less digits than its factorization.

12231231210212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25695863915 (or 25695863913 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 12231231210212 its reverse (21201213213221), we get a palindrome (33432444423433).

The spelling of 12231231210212 in words is "twelve trillion, two hundred thirty-one billion, two hundred thirty-one million, two hundred ten thousand, two hundred twelve".

Divisors: 1 2 4 7 14 17 28 34 68 119 238 476 25695863887 51391727774 102783455548 179871047209 359742094418 436829686079 719484188836 873659372158 1747318744316 3057807802553 6115615605106 12231231210212