12172162 has 16 divisors (see below), whose sum is σ = 18950400. Its totient is φ = 5859360.

The previous prime is 12172157. The next prime is 12172163. The reversal of 12172162 is 26127121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12172163) by changing a digit.

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, 5539 + ... + 7417.

It is an arithmetic number, because the mean of its divisors is an integer number (1184400).

Almost surely, 2^12172162 is an apocalyptic number.

12172162 is a deficient number, since it is larger than the sum of its proper divisors (6778238).

12172162 is a wasteful number, since it uses less digits than its factorization.

12172162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2001.

The product of its digits is 336, while the sum is 22.

The square root of 12172162 is about 3488.8625653642. The cubic root of 12172162 is about 230.0325221812.

Adding to 12172162 its reverse (26127121), we get a palindrome (38299283).

The spelling of 12172162 in words is "twelve million, one hundred seventy-two thousand, one hundred sixty-two".