111666112 has 28 divisors (see below), whose sum is σ = 225227896. Its totient is φ = 54915840.

The previous prime is 111666091. The next prime is 111666119. The reversal of 111666112 is 211666111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111666119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10398 + ... + 18205.

Almost surely, 2^111666112 is an apocalyptic number.

It is an amenable number.

111666112 is an abundant number, since it is smaller than the sum of its proper divisors (113561784).

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

111666112 is an equidigital number, since it uses as much as digits as its factorization.

111666112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28676 (or 28666 counting only the distinct ones).

The product of its digits is 432, while the sum is 25.

The square root of 111666112 is about 10567.2187447786. The cubic root of 111666112 is about 481.5489774977.

Subtracting 111666112 from its reverse (211666111), we obtain a palindrome (99999999).

The spelling of 111666112 in words is "one hundred eleven million, six hundred sixty-six thousand, one hundred twelve".