222221222112 has 96 divisors (see below), whose sum is σ = 601429987872. Its totient is φ = 71791017984.

The previous prime is 222221222107. The next prime is 222221222131. The reversal of 222221222112 is 211222122222.

222221222112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

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

It is a congruent number.

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 in 15 ways as a sum of consecutive naturals, for example, 791148 + ... + 1034580.

It is an arithmetic number, because the mean of its divisors is an integer number (6264895707).

Almost surely, 2^222221222112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222221222112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (300714993936).

222221222112 is an abundant number, since it is smaller than the sum of its proper divisors (379208765760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222221222112 is a wasteful number, since it uses less digits than its factorization.

222221222112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243740 (or 243732 counting only the distinct ones).

The product of its digits is 512, while the sum is 21.

Adding to 222221222112 its reverse (211222122222), we get a palindrome (433443344334).

The spelling of 222221222112 in words is "two hundred twenty-two billion, two hundred twenty-one million, two hundred twenty-two thousand, one hundred twelve".