13121125402 has 96 divisors (see below), whose sum is σ = 26307296640. Its totient is φ = 4767006720.

The previous prime is 13121125387. The next prime is 13121125421. The reversal of 13121125402 is 20452112131.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5027874 + ... + 5030482.

It is an arithmetic number, because the mean of its divisors is an integer number (274034340).

Almost surely, 2^13121125402 is an apocalyptic number.

13121125402 is an abundant number, since it is smaller than the sum of its proper divisors (13186171238).

13121125402 is a wasteful number, since it uses less digits than its factorization.

13121125402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2776 (or 2759 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 13121125402 its reverse (20452112131), we get a palindrome (33573237533).

The spelling of 13121125402 in words is "thirteen billion, one hundred twenty-one million, one hundred twenty-five thousand, four hundred two".