212222212 has 12 divisors (see below), whose sum is σ = 371508480. Its totient is φ = 106076936.

The previous prime is 212222189. The next prime is 212222291.

212222212 is nontrivially palindromic in base 10.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9813 + ... + 22819.

It is an arithmetic number, because the mean of its divisors is an integer number (30959040).

Almost surely, 2^212222212 is an apocalyptic number.

It is an amenable number.

212222212 is a deficient number, since it is larger than the sum of its proper divisors (159286268).

212222212 is a wasteful number, since it uses less digits than its factorization.

212222212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17090 (or 17088 counting only the distinct ones).

The product of its digits is 128, while the sum is 16.

The square root of 212222212 is about 14567.8485714260. The cubic root of 212222212 is about 596.4814548820.

The spelling of 212222212 in words is "two hundred twelve million, two hundred twenty-two thousand, two hundred twelve".