232120213221 has 16 divisors (see below), whose sum is σ = 333314320640. Its totient is φ = 142837421760.

The previous prime is 232120213219. The next prime is 232120213231. The reversal of 232120213221 is 122312021232.

It is not a de Polignac number, because 232120213221 - 2¹ = 232120213219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232120213201) 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, 982251 + ... + 1195431.

It is an arithmetic number, because the mean of its divisors is an integer number (20832145040).

Almost surely, 2^232120213221 is an apocalyptic number.

It is an amenable number.

232120213221 is a deficient number, since it is larger than the sum of its proper divisors (101194107419).

232120213221 is a wasteful number, since it uses less digits than its factorization.

232120213221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241116.

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

Adding to 232120213221 its reverse (122312021232), we get a palindrome (354432234453).

The spelling of 232120213221 in words is "two hundred thirty-two billion, one hundred twenty million, two hundred thirteen thousand, two hundred twenty-one".