111102111220220 has 48 divisors (see below), whose sum is σ = 241016119481088. Its totient is φ = 42975944954880.

The previous prime is 111102111220201. The next prime is 111102111220223. The reversal of 111102111220220 is 22022111201111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111102111220223) 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, 64406189 + ... + 66108708.

It is an arithmetic number, because the mean of its divisors is an integer number (5021169155856).

Almost surely, 2^{111102111220220} is an apocalyptic number.

111102111220220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111102111220220 is an abundant number, since it is smaller than the sum of its proper divisors (129914008260868).

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

111102111220220 is a wasteful number, since it uses less digits than its factorization.

111102111220220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130516310 (or 130516308 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 111102111220220 its reverse (22022111201111), we get a palindrome (133124222421331).

The spelling of 111102111220220 in words is "one hundred eleven trillion, one hundred two billion, one hundred eleven million, two hundred twenty thousand, two hundred twenty".