232012132121221 has 4 divisors (see below), whose sum is σ = 239496394447744. Its totient is φ = 224527869794700.

The previous prime is 232012132121173. The next prime is 232012132121281. The reversal of 232012132121221 is 122121231210232.

232012132121221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 232012132121221 - 2⁷ = 232012132121093 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 (232012132121281) 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, 3742131163215 + ... + 3742131163276.

It is an arithmetic number, because the mean of its divisors is an integer number (59874098611936).

Almost surely, 2^{232012132121221} is an apocalyptic number.

It is an amenable number.

232012132121221 is a deficient number, since it is larger than the sum of its proper divisors (7484262326523).

232012132121221 is an equidigital number, since it uses as much as digits as its factorization.

232012132121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7484262326522.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 232012132121221 its reverse (122121231210232), we get a palindrome (354133363331453).

The spelling of 232012132121221 in words is "two hundred thirty-two trillion, twelve billion, one hundred thirty-two million, one hundred twenty-one thousand, two hundred twenty-one".