222222011212 has 48 divisors (see below), whose sum is σ = 398371182048. Its totient is φ = 108435824640.

The previous prime is 222222011189. The next prime is 222222011237. The reversal of 222222011212 is 212110222222.

It is a self number, because there is not a number n which added to its sum of digits gives 222222011212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19123228 + ... + 19134844.

It is an arithmetic number, because the mean of its divisors is an integer number (8299399626).

Almost surely, 2^222222011212 is an apocalyptic number.

It is an amenable number.

222222011212 is a deficient number, since it is larger than the sum of its proper divisors (176149170836).

222222011212 is a wasteful number, since it uses less digits than its factorization.

222222011212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12346 (or 12344 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 222222011212 its reverse (212110222222), we get a palindrome (434332233434).

The spelling of 222222011212 in words is "two hundred twenty-two billion, two hundred twenty-two million, eleven thousand, two hundred twelve".