222221112212 has 12 divisors (see below), whose sum is σ = 424240305216. Its totient is φ = 101009596440.

The previous prime is 222221112203. The next prime is 222221112263. The reversal of 222221112212 is 212211122222.

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 3 ways as a sum of consecutive naturals, for example, 2525239868 + ... + 2525239955.

It is an arithmetic number, because the mean of its divisors is an integer number (35353358768).

Almost surely, 2^222221112212 is an apocalyptic number.

222221112212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

222221112212 is a deficient number, since it is larger than the sum of its proper divisors (202019193004).

222221112212 is a wasteful number, since it uses less digits than its factorization.

222221112212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5050479838 (or 5050479836 counting only the distinct ones).

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

Adding to 222221112212 its reverse (212211122222), we get a palindrome (434432234434).

It can be divided in two parts, 222221 and 112212, that added together give a palindrome (334433).

The spelling of 222221112212 in words is "two hundred twenty-two billion, two hundred twenty-one million, one hundred twelve thousand, two hundred twelve".