222213212 has 24 divisors (see below), whose sum is σ = 436996896. Its totient is φ = 98100288.

The previous prime is 222213203. The next prime is 222213217. The reversal of 222213212 is 212312222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222213217) 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, 91703 + ... + 94094.

It is an arithmetic number, because the mean of its divisors is an integer number (18208204).

Almost surely, 2^222213212 is an apocalyptic number.

It is an amenable number.

222213212 is a deficient number, since it is larger than the sum of its proper divisors (214783684).

222213212 is a wasteful number, since it uses less digits than its factorization.

222213212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185837 (or 185835 counting only the distinct ones).

The product of its digits is 192, while the sum is 17.

The square root of 222213212 is about 14906.8176348944. The cubic root of 222213212 is about 605.6986778366.

Adding to 222213212 its reverse (212312222), we get a palindrome (434525434).

The spelling of 222213212 in words is "two hundred twenty-two million, two hundred thirteen thousand, two hundred twelve".