13121104104 has 48 divisors (see below), whose sum is σ = 35935625700. Its totient is φ = 4324556544.

The previous prime is 13121104057. The next prime is 13121104111. The reversal of 13121104104 is 40140112131.

It can be written as a sum of positive squares in 2 ways, for example, as 11109581604 + 2011522500 = 105402^2 + 44850^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1017399 + ... + 1030214.

Almost surely, 2^13121104104 is an apocalyptic number.

It is an amenable number.

13121104104 is an abundant number, since it is smaller than the sum of its proper divisors (22814521596).

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

13121104104 is a wasteful number, since it uses less digits than its factorization.

13121104104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2047714 (or 2047707 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 13121104104 its reverse (40140112131), we get a palindrome (53261216235).

The spelling of 13121104104 in words is "thirteen billion, one hundred twenty-one million, one hundred four thousand, one hundred four".