166204222 has 16 divisors (see below), whose sum is σ = 256445280. Its totient is φ = 80729568.

The previous prime is 166204219. The next prime is 166204243. The reversal of 166204222 is 222402661.

166204222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 60748 + ... + 63424.

It is an arithmetic number, because the mean of its divisors is an integer number (16027830).

Almost surely, 2^166204222 is an apocalyptic number.

166204222 is a deficient number, since it is larger than the sum of its proper divisors (90241058).

166204222 is a wasteful number, since it uses less digits than its factorization.

166204222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3555.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 166204222 is about 12892.0216413098. The cubic root of 166204222 is about 549.8117504509.

Adding to 166204222 its reverse (222402661), we get a palindrome (388606883).

The spelling of 166204222 in words is "one hundred sixty-six million, two hundred four thousand, two hundred twenty-two".