11120211220 has 24 divisors (see below), whose sum is σ = 23355216864. Its totient is φ = 4447556256.

The previous prime is 11120211217. The next prime is 11120211227. The reversal of 11120211220 is 2211202111.

It is a self number, because there is not a number n which added to its sum of digits gives 11120211220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11120211227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170079 + ... + 226201.

It is an arithmetic number, because the mean of its divisors is an integer number (973134036).

Almost surely, 2^11120211220 is an apocalyptic number.

11120211220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11120211220 is an abundant number, since it is smaller than the sum of its proper divisors (12235005644).

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

11120211220 is a wasteful number, since it uses less digits than its factorization.

11120211220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66039 (or 66037 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 11120211220 its reverse (2211202111), we get a palindrome (13331413331).

The spelling of 11120211220 in words is "eleven billion, one hundred twenty million, two hundred eleven thousand, two hundred twenty".