2122172 has 24 divisors (see below), whose sum is σ = 4111296. Its totient is φ = 952128.

The previous prime is 2122163. The next prime is 2122181. The reversal of 2122172 is 2712212.

It is an interprime number because it is at equal distance from previous prime (2122163) and next prime (2122181).

It is a super-2 number, since 2×2122172² = 9007227995168, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2122172.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1373 + ... + 2475.

It is an arithmetic number, because the mean of its divisors is an integer number (171304).

2^2122172 is an apocalyptic number.

It is an amenable number.

2122172 is a deficient number, since it is larger than the sum of its proper divisors (1989124).

2122172 is a wasteful number, since it uses less digits than its factorization.

2122172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157 (or 1155 counting only the distinct ones).

The product of its digits is 112, while the sum is 17.

The square root of 2122172 is about 1456.7676547755. The cubic root of 2122172 is about 128.5070221803.

Adding to 2122172 its reverse (2712212), we get a palindrome (4834384).

The spelling of 2122172 in words is "two million, one hundred twenty-two thousand, one hundred seventy-two".