11113220220 has 48 divisors (see below), whose sum is σ = 31121683488. Its totient is φ = 2963080960.

The previous prime is 11113220203. The next prime is 11113220221. The reversal of 11113220220 is 2202231111.

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 11113220220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11113220221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 658690 + ... + 675350.

It is an arithmetic number, because the mean of its divisors is an integer number (648368406).

Almost surely, 2^11113220220 is an apocalyptic number.

11113220220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11113220220 is an abundant number, since it is smaller than the sum of its proper divisors (20008463268).

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

11113220220 is a wasteful number, since it uses less digits than its factorization.

11113220220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27790 (or 27788 counting only the distinct ones).

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

Adding to 11113220220 its reverse (2202231111), we get a palindrome (13315451331).

The spelling of 11113220220 in words is "eleven billion, one hundred thirteen million, two hundred twenty thousand, two hundred twenty".