2222122112 has 64 divisors (see below), whose sum is σ = 5123500800. Its totient is φ = 940253184.

The previous prime is 2222122099. The next prime is 2222122121. The reversal of 2222122112 is 2112212222.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55088 + ... + 86480.

It is an arithmetic number, because the mean of its divisors is an integer number (80054700).

Almost surely, 2^2222122112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2222122112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2561750400).

2222122112 is an abundant number, since it is smaller than the sum of its proper divisors (2901378688).

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

2222122112 is an equidigital number, since it uses as much as digits as its factorization.

2222122112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31493 (or 31481 counting only the distinct ones).

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

The square root of 2222122112 is about 47139.3902378892. The cubic root of 2222122112 is about 1304.9362841819.

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

The spelling of 2222122112 in words is "two billion, two hundred twenty-two million, one hundred twenty-two thousand, one hundred twelve".