11031110220 has 96 divisors (see below), whose sum is σ = 33382077120. Its totient is φ = 2705633280.

The previous prime is 11031110197. The next prime is 11031110267. The reversal of 11031110220 is 2201113011.

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 = 11031110196 and 11031110205.

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, 194016 + ... + 244344.

It is an arithmetic number, because the mean of its divisors is an integer number (347729970).

Almost surely, 2^11031110220 is an apocalyptic number.

11031110220 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 11031110220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16691038560).

11031110220 is an abundant number, since it is smaller than the sum of its proper divisors (22350966900).

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

11031110220 is a wasteful number, since it uses less digits than its factorization.

11031110220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50635 (or 50633 counting only the distinct ones).

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

Adding to 11031110220 its reverse (2201113011), we get a palindrome (13232223231).

The spelling of 11031110220 in words is "eleven billion, thirty-one million, one hundred ten thousand, two hundred twenty".