12123013012 has 24 divisors (see below), whose sum is σ = 23146728192. Its totient is φ = 5509795200.

The previous prime is 12123012977. The next prime is 12123013051. The reversal of 12123013012 is 21031032121.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 676812 + ... + 694492.

It is an arithmetic number, because the mean of its divisors is an integer number (964447008).

Almost surely, 2^12123013012 is an apocalyptic number.

It is an amenable number.

12123013012 is a deficient number, since it is larger than the sum of its proper divisors (11023715180).

12123013012 is a wasteful number, since it uses less digits than its factorization.

12123013012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33279 (or 33277 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12123013012 its reverse (21031032121), we get a palindrome (33154045133).

The spelling of 12123013012 in words is "twelve billion, one hundred twenty-three million, thirteen thousand, twelve".