13112044220 has 96 divisors (see below), whose sum is σ = 30469727232. Its totient is φ = 4700000000.

The previous prime is 13112044181. The next prime is 13112044243. The reversal of 13112044220 is 2244021131.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 13112044192 and 13112044201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5576045 + ... + 5578395.

It is an arithmetic number, because the mean of its divisors is an integer number (317392992).

Almost surely, 2^13112044220 is an apocalyptic number.

13112044220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13112044220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15234863616).

13112044220 is an abundant number, since it is smaller than the sum of its proper divisors (17357683012).

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

13112044220 is a wasteful number, since it uses less digits than its factorization.

13112044220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2723 (or 2721 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 13112044220 its reverse (2244021131), we get a palindrome (15356065351).

The spelling of 13112044220 in words is "thirteen billion, one hundred twelve million, forty-four thousand, two hundred twenty".