13121303404 has 72 divisors (see below), whose sum is σ = 26709198320. Its totient is φ = 5620285440.

The previous prime is 13121303387. The next prime is 13121303449. The reversal of 13121303404 is 40430312131.

13121303404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1771132 + ... + 1778524.

Almost surely, 2^13121303404 is an apocalyptic number.

It is an amenable number.

13121303404 is an abundant number, since it is smaller than the sum of its proper divisors (13587894916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13121303404 is a wasteful number, since it uses less digits than its factorization.

13121303404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7631 (or 7618 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 13121303404 its reverse (40430312131), we get a palindrome (53551615535).

The spelling of 13121303404 in words is "thirteen billion, one hundred twenty-one million, three hundred three thousand, four hundred four".