123121120204 has 12 divisors (see below), whose sum is σ = 215467445200. Its totient is φ = 61558993008.

The previous prime is 123121120139. The next prime is 123121120211. The reversal of 123121120204 is 402021121321.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205119 + ... + 536950.

Almost surely, 2^123121120204 is an apocalyptic number.

It is an amenable number.

123121120204 is a deficient number, since it is larger than the sum of its proper divisors (92346324996).

123121120204 is a wasteful number, since it uses less digits than its factorization.

123121120204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783552 (or 783550 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 123121120204 its reverse (402021121321), we get a palindrome (525142241525).

The spelling of 123121120204 in words is "one hundred twenty-three billion, one hundred twenty-one million, one hundred twenty thousand, two hundred four".