111665222 has 16 divisors (see below), whose sum is σ = 171990000. Its totient is φ = 54341760.

The previous prime is 111665171. The next prime is 111665237. The reversal of 111665222 is 222566111.

It is a junction number, because it is equal to n+sod(n) for n = 111665191 and 111665200.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 39554 + ... + 42282.

It is an arithmetic number, because the mean of its divisors is an integer number (10749375).

Almost surely, 2^111665222 is an apocalyptic number.

111665222 is a deficient number, since it is larger than the sum of its proper divisors (60324778).

111665222 is a wasteful number, since it uses less digits than its factorization.

111665222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3271.

The product of its digits is 1440, while the sum is 26.

The square root of 111665222 is about 10567.1766333302. The cubic root of 111665222 is about 481.5476981489.

The spelling of 111665222 in words is "one hundred eleven million, six hundred sixty-five thousand, two hundred twenty-two".