232121612 has 24 divisors (see below), whose sum is σ = 428652000. Its totient is φ = 109763456.

The previous prime is 232121599. The next prime is 232121641. The reversal of 232121612 is 216121232.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5987 + ... + 22362.

It is an arithmetic number, because the mean of its divisors is an integer number (17860500).

Almost surely, 2^232121612 is an apocalyptic number.

It is an amenable number.

232121612 is a deficient number, since it is larger than the sum of its proper divisors (196530388).

232121612 is a wasteful number, since it uses less digits than its factorization.

232121612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28465 (or 28463 counting only the distinct ones).

The product of its digits is 288, while the sum is 20.

The square root of 232121612 is about 15235.5377981875. The cubic root of 232121612 is about 614.5707114959.

Adding to 232121612 its reverse (216121232), we get a palindrome (448242844).

The spelling of 232121612 in words is "two hundred thirty-two million, one hundred twenty-one thousand, six hundred twelve".