232112131221 has 32 divisors (see below), whose sum is σ = 333711820800. Its totient is φ = 143060238720.

The previous prime is 232112131219. The next prime is 232112131231. The reversal of 232112131221 is 122131211232.

It is not a de Polignac number, because 232112131221 - 2¹ = 232112131219 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232112131231) 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, 208836 + ... + 712626.

It is an arithmetic number, because the mean of its divisors is an integer number (10428494400).

Almost surely, 2^232112131221 is an apocalyptic number.

It is an amenable number.

232112131221 is a deficient number, since it is larger than the sum of its proper divisors (101599689579).

232112131221 is a wasteful number, since it uses less digits than its factorization.

232112131221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504009.

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

Adding to 232112131221 its reverse (122131211232), we get a palindrome (354243342453).

The spelling of 232112131221 in words is "two hundred thirty-two billion, one hundred twelve million, one hundred thirty-one thousand, two hundred twenty-one".