222221021112 has 24 divisors (see below), whose sum is σ = 601848599040. Its totient is φ = 74073673680.

The previous prime is 222221021081. The next prime is 222221021119. The reversal of 222221021112 is 211120122222.

It is a happy number.

222221021112 is a `hidden beast` number, since 222 + 221 + 0 + 211 + 12 = 666.

222221021112 is digitally balanced in base 3, 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 (24).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222221021119) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1543201464 + ... + 1543201607.

It is an arithmetic number, because the mean of its divisors is an integer number (25077024960).

Almost surely, 2^222221021112 is an apocalyptic number.

It is an amenable number.

222221021112 is an abundant number, since it is smaller than the sum of its proper divisors (379627577928).

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

222221021112 is a wasteful number, since it uses less digits than its factorization.

222221021112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3086403083 (or 3086403076 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 222221021112 its reverse (211120122222), we get a palindrome (433341143334).

The spelling of 222221021112 in words is "two hundred twenty-two billion, two hundred twenty-one million, twenty-one thousand, one hundred twelve".