212112166 has 16 divisors (see below), whose sum is σ = 365214240. Its totient is φ = 90506880.

The previous prime is 212112161. The next prime is 212112167. The reversal of 212112166 is 661211212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212112161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29875 + ... + 36286.

It is an arithmetic number, because the mean of its divisors is an integer number (22825890).

Almost surely, 2^212112166 is an apocalyptic number.

212112166 is a deficient number, since it is larger than the sum of its proper divisors (153102074).

212112166 is a wasteful number, since it uses less digits than its factorization.

212112166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66399.

The product of its digits is 288, while the sum is 22.

The square root of 212112166 is about 14564.0710654679. The cubic root of 212112166 is about 596.3783369495.

Adding to 212112166 its reverse (661211212), we get a palindrome (873323378).

The spelling of 212112166 in words is "two hundred twelve million, one hundred twelve thousand, one hundred sixty-six".