2112212222 has 16 divisors (see below), whose sum is σ = 3351365280. Its totient is φ = 996348672.

The previous prime is 2112212173. The next prime is 2112212231. The reversal of 2112212222 is 2222122112.

It is a happy number.

It is a super-2 number, since 2×2112212222² = 8922880941532354568, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2112212222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 311147 + ... + 317862.

It is an arithmetic number, because the mean of its divisors is an integer number (209460330).

Almost surely, 2^2112212222 is an apocalyptic number.

2112212222 is a deficient number, since it is larger than the sum of its proper divisors (1239153058).

2112212222 is a wasteful number, since it uses less digits than its factorization.

2112212222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629107.

The product of its digits is 128, while the sum is 17.

The square root of 2112212222 is about 45958.8100585731. The cubic root of 2112212222 is about 1283.0567046342.

Adding to 2112212222 its reverse (2222122112), we get a palindrome (4334334334).

The spelling of 2112212222 in words is "two billion, one hundred twelve million, two hundred twelve thousand, two hundred twenty-two".