2112222212 has 12 divisors (see below), whose sum is σ = 3721197900. Its totient is φ = 1049022816.

The previous prime is 2112222209. The next prime is 2112222251. The reversal of 2112222212 is 2122222112.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 345365056 + 1766857156 = 18584^2 + 42034^2 .

It is a super-2 number, since 2×2112222212² = 8922965345732345888, which contains 22 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1771403 + ... + 1772594.

It is an arithmetic number, because the mean of its divisors is an integer number (310099825).

Almost surely, 2^2112222212 is an apocalyptic number.

It is an amenable number.

2112222212 is a deficient number, since it is larger than the sum of its proper divisors (1608975688).

2112222212 is a wasteful number, since it uses less digits than its factorization.

2112222212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3544150 (or 3544148 counting only the distinct ones).

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

The square root of 2112222212 is about 45958.9187427207. The cubic root of 2112222212 is about 1283.0587274291.

Adding to 2112222212 its reverse (2122222112), we get a palindrome (4234444324).

It can be divided in two parts, 21122 and 22212, that added together give a palindrome (43334).

The spelling of 2112222212 in words is "two billion, one hundred twelve million, two hundred twenty-two thousand, two hundred twelve".