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12122102212 = 22111716206019
BaseRepresentation
bin10110100101000100…
…01001100111000100
31011021210212121002121
423102202021213010
5144311224232322
65322510415324
7606253111603
oct132242114704
934253777077
1012122102212
1151606798a0
122423801544
1311b254655c
1482dd23a3a
154ae33dec7
hex2d28899c4

12122102212 has 24 divisors (see below), whose sum is σ = 24503502240. Its totient is φ = 5185925760.

The previous prime is 12122102203. The next prime is 12122102221. The reversal of 12122102212 is 21220122121.

Adding to 12122102212 its reverse (21220122121), we get a palindrome (33342224333).

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12122102203) and next prime (12122102221).

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, 8102262 + ... + 8103757.

It is an arithmetic number, because the mean of its divisors is an integer number (1020979260).

Almost surely, 212122102212 is an apocalyptic number.

It is an amenable number.

12122102212 is an abundant number, since it is smaller than the sum of its proper divisors (12381400028).

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

12122102212 is a wasteful number, since it uses less digits than its factorization.

12122102212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16206051 (or 16206049 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The spelling of 12122102212 in words is "twelve billion, one hundred twenty-two million, one hundred two thousand, two hundred twelve".

Divisors: 1 2 4 11 17 22 34 44 68 187 374 748 16206019 32412038 64824076 178266209 275502323 356532418 551004646 713064836 1102009292 3030525553 6061051106 12122102212