13111110220 has 96 divisors (see below), whose sum is σ = 30409327872. Its totient is φ = 4717778688.

The previous prime is 13111110211. The next prime is 13111110283. The reversal of 13111110220 is 2201111131.

It is a happy number.

It is a super-2 number, since 2×13111110220² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 13111110220.

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, 6293299 + ... + 6295381.

It is an arithmetic number, because the mean of its divisors is an integer number (316763832).

Almost surely, 2^13111110220 is an apocalyptic number.

13111110220 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 13111110220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15204663936).

13111110220 is an abundant number, since it is smaller than the sum of its proper divisors (17298217652).

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

13111110220 is a wasteful number, since it uses less digits than its factorization.

13111110220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2711 (or 2709 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 13111110220 its reverse (2201111131), we get a palindrome (15312221351).

The spelling of 13111110220 in words is "thirteen billion, one hundred eleven million, one hundred ten thousand, two hundred twenty".