111121984 has 14 divisors (see below), whose sum is σ = 220507814. Its totient is φ = 55560960.

The previous prime is 111121963. The next prime is 111121999. The reversal of 111121984 is 489121111.

It can be written as a sum of positive squares in only one way, i.e., 110670400 + 451584 = 10520^2 + 672^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 868077 + ... + 868204.

Almost surely, 2^111121984 is an apocalyptic number.

It is an amenable number.

111121984 is a deficient number, since it is larger than the sum of its proper divisors (109385830).

111121984 is an equidigital number, since it uses as much as digits as its factorization.

111121984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1736293 (or 1736283 counting only the distinct ones).

The product of its digits is 576, while the sum is 28.

The square root of 111121984 is about 10541.4412676825. The cubic root of 111121984 is about 480.7655376770.

The spelling of 111121984 in words is "one hundred eleven million, one hundred twenty-one thousand, nine hundred eighty-four".