232121211312 has 20 divisors (see below), whose sum is σ = 599646462680. Its totient is φ = 77373737088.

The previous prime is 232121211253. The next prime is 232121211367. The reversal of 232121211312 is 213112121232.

It is a super-2 number, since 2×232121211312² (a number of 24 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2417929237 + ... + 2417929332.

It is an arithmetic number, because the mean of its divisors is an integer number (29982323134).

Almost surely, 2^232121211312 is an apocalyptic number.

It is an amenable number.

232121211312 is an abundant number, since it is smaller than the sum of its proper divisors (367525251368).

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

232121211312 is a wasteful number, since it uses less digits than its factorization.

232121211312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4835858580 (or 4835858574 counting only the distinct ones).

The product of its digits is 288, while the sum is 21.

Adding to 232121211312 its reverse (213112121232), we get a palindrome (445233332544).

The spelling of 232121211312 in words is "two hundred thirty-two billion, one hundred twenty-one million, two hundred eleven thousand, three hundred twelve".