111220980 has 48 divisors (see below), whose sum is σ = 335376384. Its totient is φ = 27377280.

The previous prime is 111220969. The next prime is 111220999. The reversal of 111220980 is 89022111.

It is a self number, because there is not a number n which added to its sum of digits gives 111220980.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70516 + ... + 72075.

It is an arithmetic number, because the mean of its divisors is an integer number (6987008).

Almost surely, 2^111220980 is an apocalyptic number.

111220980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111220980 is an abundant number, since it is smaller than the sum of its proper divisors (224155404).

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

111220980 is a wasteful number, since it uses less digits than its factorization.

111220980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142616 (or 142614 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 24.

The square root of 111220980 is about 10546.1357852059. The cubic root of 111220980 is about 480.9082629267.

The spelling of 111220980 in words is "one hundred eleven million, two hundred twenty thousand, nine hundred eighty".