2112172 has 6 divisors (see below), whose sum is σ = 3696308. Its totient is φ = 1056084.

The previous prime is 2112169. The next prime is 2112191. The reversal of 2112172 is 2712112.

It is a super-2 number, since 2×2112172² = 8922541115168, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 264018 + ... + 264025.

2^2112172 is an apocalyptic number.

It is an amenable number.

2112172 is a deficient number, since it is larger than the sum of its proper divisors (1584136).

2112172 is a wasteful number, since it uses less digits than its factorization.

2112172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528047 (or 528045 counting only the distinct ones).

The product of its digits is 56, while the sum is 16.

The square root of 2112172 is about 1453.3313455644. The cubic root of 2112172 is about 128.3048560340.

Adding to 2112172 its reverse (2712112), we get a palindrome (4824284).

The spelling of 2112172 in words is "two million, one hundred twelve thousand, one hundred seventy-two".