111228988 has 24 divisors (see below), whose sum is σ = 210729008. Its totient is φ = 51065856.

The previous prime is 111228967. The next prime is 111229009. The reversal of 111228988 is 889822111.

It is an interprime number because it is at equal distance from previous prime (111228967) and next prime (111229009).

It is a self number, because there is not a number n which added to its sum of digits gives 111228988.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4495 + ... + 15577.

Almost surely, 2^111228988 is an apocalyptic number.

It is an amenable number.

111228988 is a deficient number, since it is larger than the sum of its proper divisors (99500020).

111228988 is a wasteful number, since it uses less digits than its factorization.

111228988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11293 (or 11291 counting only the distinct ones).

The product of its digits is 18432, while the sum is 40.

The square root of 111228988 is about 10546.5154435008. The cubic root of 111228988 is about 480.9198045769.

The spelling of 111228988 in words is "one hundred eleven million, two hundred twenty-eight thousand, nine hundred eighty-eight".