111689112 has 16 divisors (see below), whose sum is σ = 279222840. Its totient is φ = 37229696.

The previous prime is 111689111. The next prime is 111689129. The reversal of 111689112 is 211986111.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 111689112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111689111) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 2326833 + ... + 2326880.

Almost surely, 2^111689112 is an apocalyptic number.

111689112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111689112 is an abundant number, since it is smaller than the sum of its proper divisors (167533728).

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

111689112 is a wasteful number, since it uses less digits than its factorization.

111689112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4653722 (or 4653718 counting only the distinct ones).

The product of its digits is 864, while the sum is 30.

The square root of 111689112 is about 10568.3069599629. The cubic root of 111689112 is about 481.5820369639.

The spelling of 111689112 in words is "one hundred eleven million, six hundred eighty-nine thousand, one hundred twelve".