11131010220 has 72 divisors (see below), whose sum is σ = 34257776112. Its totient is φ = 2698424960.

The previous prime is 11131010201. The next prime is 11131010237. The reversal of 11131010220 is 2201013111.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 11131010196 and 11131010205.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 759339 + ... + 773858.

It is an arithmetic number, because the mean of its divisors is an integer number (475802446).

Almost surely, 2^11131010220 is an apocalyptic number.

11131010220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11131010220 is an abundant number, since it is smaller than the sum of its proper divisors (23126765892).

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

11131010220 is a wasteful number, since it uses less digits than its factorization.

11131010220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1533231 (or 1533218 counting only the distinct ones).

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

Adding to 11131010220 its reverse (2201013111), we get a palindrome (13332023331).

The spelling of 11131010220 in words is "eleven billion, one hundred thirty-one million, ten thousand, two hundred twenty".