232121320312 has 32 divisors (see below), whose sum is σ = 507985873920. Its totient is φ = 97363956960.

The previous prime is 232121320307. The next prime is 232121320313. The reversal of 232121320312 is 213023121232.

It is a super-2 number, since 2×232121320312² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232121320313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44093364 + ... + 44098627.

It is an arithmetic number, because the mean of its divisors is an integer number (15874558560).

Almost surely, 2^232121320312 is an apocalyptic number.

It is an amenable number.

232121320312 is an abundant number, since it is smaller than the sum of its proper divisors (275864553608).

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

232121320312 is a wasteful number, since it uses less digits than its factorization.

232121320312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88192051 (or 88192047 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 232121320312 its reverse (213023121232), we get a palindrome (445144441544).

The spelling of 232121320312 in words is "two hundred thirty-two billion, one hundred twenty-one million, three hundred twenty thousand, three hundred twelve".