13221112100 has 72 divisors (see below), whose sum is σ = 33113172288. Its totient is φ = 4488048000.

The previous prime is 13221112087. The next prime is 13221112111. The reversal of 13221112100 is 121112231.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22802 + ... + 164201.

Almost surely, 2^13221112100 is an apocalyptic number.

13221112100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13221112100 is an abundant number, since it is smaller than the sum of its proper divisors (19892060188).

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

13221112100 is a wasteful number, since it uses less digits than its factorization.

13221112100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187125 (or 187118 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 13221112100 its reverse (121112231), we get a palindrome (13342224331).

The spelling of 13221112100 in words is "thirteen billion, two hundred twenty-one million, one hundred twelve thousand, one hundred".