13120112220 has 48 divisors (see below), whose sum is σ = 36861743520. Its totient is φ = 3486750976.

The previous prime is 13120112209. The next prime is 13120112231. The reversal of 13120112220 is 2221102131.

It is an interprime number because it is at equal distance from previous prime (13120112209) and next prime (13120112231).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 13120112220.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 355575 + ... + 390734.

It is an arithmetic number, because the mean of its divisors is an integer number (767952990).

Almost surely, 2^13120112220 is an apocalyptic number.

13120112220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13120112220 is an abundant number, since it is smaller than the sum of its proper divisors (23741631300).

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

13120112220 is a wasteful number, since it uses less digits than its factorization.

13120112220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746614 (or 746612 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 13120112220 its reverse (2221102131), we get a palindrome (15341214351).

The spelling of 13120112220 in words is "thirteen billion, one hundred twenty million, one hundred twelve thousand, two hundred twenty".