222221221112 has 64 divisors (see below), whose sum is σ = 497877256800. Its totient is φ = 91789680640.

The previous prime is 222221221109. The next prime is 222221221139. The reversal of 222221221112 is 211122122222.

It is a super-2 number, since 2×222221221112² (a number of 23 digits) contains 22 as substring.

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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2517713 + ... + 2604480.

Almost surely, 2^222221221112 is an apocalyptic number.

222221221112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

222221221112 is an abundant number, since it is smaller than the sum of its proper divisors (275656035688).

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

222221221112 is a wasteful number, since it uses less digits than its factorization.

222221221112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5122256 (or 5122252 counting only the distinct ones).

The product of its digits is 256, while the sum is 20.

Adding to 222221221112 its reverse (211122122222), we get a palindrome (433343343334).

The spelling of 222221221112 in words is "two hundred twenty-two billion, two hundred twenty-one million, two hundred twenty-one thousand, one hundred twelve".