222222111112 has 8 divisors (see below), whose sum is σ = 416666458350. Its totient is φ = 111111055552.

The previous prime is 222222111031. The next prime is 222222111193. The reversal of 222222111112 is 211111222222.

222222111112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (222222111031) and next prime (222222111193).

It can be written as a sum of positive squares in only one way, i.e., 219985388676 + 2236722436 = 469026^2 + 47294^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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

It is a pancake number, because a pancake can be divided into 222222111112 parts by 666666 straight cuts.

It is a self number, because there is not a number n which added to its sum of digits gives 222222111112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13888881937 + ... + 13888881952.

Almost surely, 2^222222111112 is an apocalyptic number.

It is an amenable number.

222222111112 is a deficient number, since it is larger than the sum of its proper divisors (194444347238).

222222111112 is a wasteful number, since it uses less digits than its factorization.

222222111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27777763895 (or 27777763891 counting only the distinct ones).

The product of its digits is 128, while the sum is 19.

Adding to 222222111112 its reverse (211111222222), we get a palindrome (433333333334).

The spelling of 222222111112 in words is "two hundred twenty-two billion, two hundred twenty-two million, one hundred eleven thousand, one hundred twelve".