13121313022100 has 72 divisors (see below), whose sum is σ = 29181065208960. Its totient is φ = 5119653127680.

The previous prime is 13121313022099. The next prime is 13121313022163. The reversal of 13121313022100 is 122031312131.

It is a happy number.

13121313022100 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 (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9349877 + ... + 10661276.

Almost surely, 2^{13121313022100} is an apocalyptic number.

13121313022100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13121313022100 is an abundant number, since it is smaller than the sum of its proper divisors (16059752186860).

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

13121313022100 is a wasteful number, since it uses less digits than its factorization.

13121313022100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20011329 (or 20011322 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 13121313022100 its reverse (122031312131), we get a palindrome (13243344334231).

The spelling of 13121313022100 in words is "thirteen trillion, one hundred twenty-one billion, three hundred thirteen million, twenty-two thousand, one hundred".