166203212 has 12 divisors (see below), whose sum is σ = 332406480. Its totient is φ = 71229936.

The previous prime is 166203211. The next prime is 166203251. The reversal of 166203212 is 212302661.

166203212 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (166203211) 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 3 ways as a sum of consecutive naturals, for example, 2967887 + ... + 2967942.

It is an arithmetic number, because the mean of its divisors is an integer number (27700540).

Almost surely, 2^166203212 is an apocalyptic number.

It is an amenable number.

166203212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166203212 is a wasteful number, since it uses less digits than its factorization.

166203212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5935840 (or 5935838 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 166203212 is about 12891.9824697368. The cubic root of 166203212 is about 549.8106367387.

Adding to 166203212 its reverse (212302661), we get a palindrome (378505873).

The spelling of 166203212 in words is "one hundred sixty-six million, two hundred three thousand, two hundred twelve".