166500122 has 4 divisors (see below), whose sum is σ = 249750186. Its totient is φ = 83250060.

The previous prime is 166500119. The next prime is 166500137. The reversal of 166500122 is 221005661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 221005661 = 17 ⋅13000333.

It can be written as a sum of positive squares in only one way, i.e., 131583841 + 34916281 = 11471^2 + 5909^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41625029 + ... + 41625032.

Almost surely, 2^166500122 is an apocalyptic number.

166500122 is a deficient number, since it is larger than the sum of its proper divisors (83250064).

166500122 is an equidigital number, since it uses as much as digits as its factorization.

166500122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83250063.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 166500122 is about 12903.4926279670. The cubic root of 166500122 is about 550.1378409335.

Adding to 166500122 its reverse (221005661), we get a palindrome (387505783).

The spelling of 166500122 in words is "one hundred sixty-six million, five hundred thousand, one hundred twenty-two".