111207980 has 24 divisors (see below), whose sum is σ = 251501712. Its totient is φ = 41061312.

The previous prime is 111207959. The next prime is 111207983. The reversal of 111207980 is 89702111.

It is not an unprimeable number, because it can be changed into a prime (111207983) 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, 213602 + ... + 214121.

It is an arithmetic number, because the mean of its divisors is an integer number (10479238).

Almost surely, 2^111207980 is an apocalyptic number.

111207980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111207980 is an abundant number, since it is smaller than the sum of its proper divisors (140293732).

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

111207980 is a wasteful number, since it uses less digits than its factorization.

111207980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427745 (or 427743 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 29.

The square root of 111207980 is about 10545.5194277001. The cubic root of 111207980 is about 480.8895253018.

The spelling of 111207980 in words is "one hundred eleven million, two hundred seven thousand, nine hundred eighty".