232312332221 has 4 divisors (see below), whose sum is σ = 232350491100. Its totient is φ = 232274173344.

The previous prime is 232312332199. The next prime is 232312332289. The reversal of 232312332221 is 122233213232.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35291755321 + 197020576900 = 187861^2 + 443870^2 .

It is a cyclic number.

It is not a de Polignac number, because 232312332221 - 2²² = 232308137917 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 (232312332121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19070306 + ... + 19082483.

It is an arithmetic number, because the mean of its divisors is an integer number (58087622775).

Almost surely, 2^232312332221 is an apocalyptic number.

It is an amenable number.

232312332221 is a deficient number, since it is larger than the sum of its proper divisors (38158879).

232312332221 is an equidigital number, since it uses as much as digits as its factorization.

232312332221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38158878.

The product of its digits is 5184, while the sum is 26.

Adding to 232312332221 its reverse (122233213232), we get a palindrome (354545545453).

The spelling of 232312332221 in words is "two hundred thirty-two billion, three hundred twelve million, three hundred thirty-two thousand, two hundred twenty-one".