13121331102 has 160 divisors (see below), whose sum is σ = 34162992864. Its totient is φ = 3720038400.

The previous prime is 13121331101. The next prime is 13121331149. The reversal of 13121331102 is 20113312131.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13121331101) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 5482018 + ... + 5484410.

Almost surely, 2^13121331102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13121331102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17081496432).

13121331102 is an abundant number, since it is smaller than the sum of its proper divisors (21041661762).

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

13121331102 is a wasteful number, since it uses less digits than its factorization.

13121331102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2616 (or 2607 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 13121331102 its reverse (20113312131), we get a palindrome (33234643233).

The spelling of 13121331102 in words is "thirteen billion, one hundred twenty-one million, three hundred thirty-one thousand, one hundred two".