13121124404 has 24 divisors (see below), whose sum is σ = 23512917120. Its totient is φ = 6403368384.

The previous prime is 13121124403. The next prime is 13121124421. The reversal of 13121124404 is 40442112131.

It is a self number, because there is not a number n which added to its sum of digits gives 13121124404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13121124403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217952 + ... + 271560.

It is an arithmetic number, because the mean of its divisors is an integer number (979704880).

Almost surely, 2^13121124404 is an apocalyptic number.

It is an amenable number.

13121124404 is a deficient number, since it is larger than the sum of its proper divisors (10391792716).

13121124404 is a wasteful number, since it uses less digits than its factorization.

13121124404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55079 (or 55077 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 13121124404 its reverse (40442112131), we get a palindrome (53563236535).

The spelling of 13121124404 in words is "thirteen billion, one hundred twenty-one million, one hundred twenty-four thousand, four hundred four".