222212012 has 12 divisors (see below), whose sum is σ = 424223016. Its totient is φ = 101005440.

The previous prime is 222212009. The next prime is 222212063. The reversal of 222212012 is 210212222.

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, 2525093 + ... + 2525180.

It is an arithmetic number, because the mean of its divisors is an integer number (35351918).

Almost surely, 2^222212012 is an apocalyptic number.

222212012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

222212012 is a deficient number, since it is larger than the sum of its proper divisors (202011004).

222212012 is a wasteful number, since it uses less digits than its factorization.

222212012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5050288 (or 5050286 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 222212012 is about 14906.7773848005. Note that the first 3 decimals coincide. The cubic root of 222212012 is about 605.6975875328.

Adding to 222212012 its reverse (210212222), we get a palindrome (432424234).

The spelling of 222212012 in words is "two hundred twenty-two million, two hundred twelve thousand, twelve".