13220112132 has 36 divisors (see below), whose sum is σ = 34870442880. Its totient is φ = 4215107952.

The previous prime is 13220112127. The next prime is 13220112133. The reversal of 13220112132 is 23121102231.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is not an unprimeable number, because it can be changed into a prime (13220112133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7982332 + ... + 7983987.

Almost surely, 2^13220112132 is an apocalyptic number.

13220112132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13220112132 is an abundant number, since it is smaller than the sum of its proper divisors (21650330748).

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

13220112132 is a wasteful number, since it uses less digits than its factorization.

13220112132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15966352 (or 15966347 counting only the distinct ones).

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

Adding to 13220112132 its reverse (23121102231), we get a palindrome (36341214363).

Subtracting 13220112132 from its reverse (23121102231), we obtain a palindrome (9900990099).

The spelling of 13220112132 in words is "thirteen billion, two hundred twenty million, one hundred twelve thousand, one hundred thirty-two".