12123133012 has 12 divisors (see below), whose sum is σ = 21216667360. Its totient is φ = 6061228056.

The previous prime is 12123133003. The next prime is 12123133031. The reversal of 12123133012 is 21033132121.

It is a congruent number.

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, 7003 + ... + 155869.

Almost surely, 2^12123133012 is an apocalyptic number.

It is an amenable number.

12123133012 is a deficient number, since it is larger than the sum of its proper divisors (9093534348).

12123133012 is a wasteful number, since it uses less digits than its factorization.

12123133012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169230 (or 169228 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 12123133012 its reverse (21033132121), we get a palindrome (33156265133).

The spelling of 12123133012 in words is "twelve billion, one hundred twenty-three million, one hundred thirty-three thousand, twelve".