232023121221 has 16 divisors (see below), whose sum is σ = 311072348160. Its totient is φ = 153829421040.

The previous prime is 232023121189. The next prime is 232023121223. The reversal of 232023121221 is 122121320232.

It is not a de Polignac number, because 232023121221 - 2⁵ = 232023121189 is a prime.

It is a super-2 number, since 2×232023121221² (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 (232023121223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 471010 + ... + 828188.

It is an arithmetic number, because the mean of its divisors is an integer number (19442021760).

Almost surely, 2^232023121221 is an apocalyptic number.

It is an amenable number.

232023121221 is a deficient number, since it is larger than the sum of its proper divisors (79049226939).

232023121221 is a wasteful number, since it uses less digits than its factorization.

232023121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358376.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 232023121221 its reverse (122121320232), we get a palindrome (354144441453).

The spelling of 232023121221 in words is "two hundred thirty-two billion, twenty-three million, one hundred twenty-one thousand, two hundred twenty-one".