172182167121 has 16 divisors (see below), whose sum is σ = 229831537536. Its totient is φ = 114660514176.

The previous prime is 172182167119. The next prime is 172182167177. The reversal of 172182167121 is 121761281271.

172182167121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 172182167121 - 2¹ = 172182167119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 172182167121.

It is not an unprimeable number, because it can be changed into a prime (172182367121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22204581 + ... + 22212333.

It is an arithmetic number, because the mean of its divisors is an integer number (14364471096).

Almost surely, 2^172182167121 is an apocalyptic number.

It is an amenable number.

172182167121 is a deficient number, since it is larger than the sum of its proper divisors (57649370415).

172182167121 is a wasteful number, since it uses less digits than its factorization.

172182167121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15032.

The product of its digits is 18816, while the sum is 39.

The spelling of 172182167121 in words is "one hundred seventy-two billion, one hundred eighty-two million, one hundred sixty-seven thousand, one hundred twenty-one".