212212112222 has 64 divisors (see below), whose sum is σ = 372427165440. Its totient is φ = 89675712000.

The previous prime is 212212112209. The next prime is 212212112261. The reversal of 212212112222 is 222211212212.

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

It is a junction number, because it is equal to n+sod(n) for n = 212212112194 and 212212112203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4748393 + ... + 4792875.

It is an arithmetic number, because the mean of its divisors is an integer number (5819174460).

Almost surely, 2^212212112222 is an apocalyptic number.

212212112222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212212112222 is a deficient number, since it is larger than the sum of its proper divisors (160215053218).

212212112222 is a wasteful number, since it uses less digits than its factorization.

212212112222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44729.

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

Adding to 212212112222 its reverse (222211212212), we get a palindrome (434423324434).

The spelling of 212212112222 in words is "two hundred twelve billion, two hundred twelve million, one hundred twelve thousand, two hundred twenty-two".