2122222221112 has 16 divisors (see below), whose sum is σ = 4547619045360. Its totient is φ = 909523809024.

The previous prime is 2122222221083. The next prime is 2122222221121. The reversal of 2122222221112 is 2111222222212.

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 pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18948412633 + ... + 18948412744.

It is an arithmetic number, because the mean of its divisors is an integer number (284226190335).

Almost surely, 2^{2122222221112} is an apocalyptic number.

It is an amenable number.

2122222221112 is an abundant number, since it is smaller than the sum of its proper divisors (2425396824248).

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

2122222221112 is a wasteful number, since it uses less digits than its factorization.

2122222221112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37896825390 (or 37896825386 counting only the distinct ones).

The product of its digits is 512, while the sum is 22.

Adding to 2122222221112 its reverse (2111222222212), we get a palindrome (4233444443324).

The spelling of 2122222221112 in words is "two trillion, one hundred twenty-two billion, two hundred twenty-two million, two hundred twenty-one thousand, one hundred twelve".