13121213204 has 12 divisors (see below), whose sum is σ = 25049588928. Its totient is φ = 5964187800.

The previous prime is 13121213191. The next prime is 13121213219. The reversal of 13121213204 is 40231212131.

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, 149104652 + ... + 149104739.

It is an arithmetic number, because the mean of its divisors is an integer number (2087465744).

Almost surely, 2^13121213204 is an apocalyptic number.

It is an amenable number.

13121213204 is a deficient number, since it is larger than the sum of its proper divisors (11928375724).

13121213204 is a wasteful number, since it uses less digits than its factorization.

13121213204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298209406 (or 298209404 counting only the distinct ones).

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

Adding to 13121213204 its reverse (40231212131), we get a palindrome (53352425335).

The spelling of 13121213204 in words is "thirteen billion, one hundred twenty-one million, two hundred thirteen thousand, two hundred four".