232120121 has 4 divisors (see below), whose sum is σ = 232211700. Its totient is φ = 232028544.

The previous prime is 232120073. The next prime is 232120123. The reversal of 232120121 is 121021232.

It is a happy number.

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 135373225 + 96746896 = 11635^2 + 9836^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-232120121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 232120096 and 232120105.

It is not an unprimeable number, because it can be changed into a prime (232120123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41876 + ... + 47093.

It is an arithmetic number, because the mean of its divisors is an integer number (58052925).

Almost surely, 2^232120121 is an apocalyptic number.

It is an amenable number.

232120121 is a deficient number, since it is larger than the sum of its proper divisors (91579).

232120121 is an equidigital number, since it uses as much as digits as its factorization.

232120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91578.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 232120121 is about 15235.4888664591. The cubic root of 232120121 is about 614.5693956240.

Adding to 232120121 its reverse (121021232), we get a palindrome (353141353).

The spelling of 232120121 in words is "two hundred thirty-two million, one hundred twenty thousand, one hundred twenty-one".