222211111101212 has 12 divisors (see below), whose sum is σ = 394346478856176. Its totient is φ = 109540688570880.

The previous prime is 222211111101137. The next prime is 222211111101227. The reversal of 222211111101212 is 212101111112222.

It is a happy number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 391216744613 + ... + 391216745180.

It is an arithmetic number, because the mean of its divisors is an integer number (32862206571348).

Almost surely, 2^{222211111101212} is an apocalyptic number.

It is an amenable number.

222211111101212 is a deficient number, since it is larger than the sum of its proper divisors (172135367754964).

222211111101212 is a wasteful number, since it uses less digits than its factorization.

222211111101212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782433489868 (or 782433489866 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 222211111101212 its reverse (212101111112222), we get a palindrome (434312222213434).

The spelling of 222211111101212 in words is "two hundred twenty-two trillion, two hundred eleven billion, one hundred eleven million, one hundred one thousand, two hundred twelve".