172922122 has 4 divisors (see below), whose sum is σ = 259383186. Its totient is φ = 86461060.

The previous prime is 172922111. The next prime is 172922131. The reversal of 172922122 is 221229271.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 172896201 + 25921 = 13149^2 + 161^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43230529 + ... + 43230532.

Almost surely, 2^172922122 is an apocalyptic number.

172922122 is a deficient number, since it is larger than the sum of its proper divisors (86461064).

172922122 is an equidigital number, since it uses as much as digits as its factorization.

172922122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86461063.

The product of its digits is 2016, while the sum is 28.

The square root of 172922122 is about 13149.9856273686. The cubic root of 172922122 is about 557.1218421240.

The spelling of 172922122 in words is "one hundred seventy-two million, nine hundred twenty-two thousand, one hundred twenty-two".