111172 has 6 divisors (see below), whose sum is σ = 194558. Its totient is φ = 55584.

The previous prime is 111149. The next prime is 111187. The reversal of 111172 is 271111.

It can be written as a sum of positive squares in only one way, i.e., 64516 + 46656 = 254^2 + 216^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13893 + ... + 13900.

2¹¹¹¹⁷² is an apocalyptic number.

It is an amenable number.

111172 is a deficient number, since it is larger than the sum of its proper divisors (83386).

111172 is a wasteful number, since it uses less digits than its factorization.

111172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27797 (or 27795 counting only the distinct ones).

The product of its digits is 14, while the sum is 13.

The square root of 111172 is about 333.4246541574. The cubic root of 111172 is about 48.0837657707.

Adding to 111172 its reverse (271111), we get a palindrome (382283).

The spelling of 111172 in words is "one hundred eleven thousand, one hundred seventy-two", and thus it is an iban number.