13221231102 has 32 divisors (see below), whose sum is σ = 29489767200. Its totient is φ = 4390689024.

The previous prime is 13221231097. The next prime is 13221231157. The reversal of 13221231102 is 20113212231.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 440563 + ... + 469614.

It is an arithmetic number, because the mean of its divisors is an integer number (921555225).

Almost surely, 2^13221231102 is an apocalyptic number.

13221231102 is an abundant number, since it is smaller than the sum of its proper divisors (16268536098).

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

13221231102 is a wasteful number, since it uses less digits than its factorization.

13221231102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910457 (or 910451 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 13221231102 its reverse (20113212231), we get a palindrome (33334443333).

The spelling of 13221231102 in words is "thirteen billion, two hundred twenty-one million, two hundred thirty-one thousand, one hundred two".