2221222222112 has 48 divisors (see below), whose sum is σ = 4563859499640. Its totient is φ = 1062824620032.

The previous prime is 2221222222103. The next prime is 2221222222171. The reversal of 2221222222112 is 2112222221222.

It can be written as a sum of positive squares in 4 ways, for example, as 520712332816 + 1700509889296 = 721604^2 + 1304036^2 .

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

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, 10486103 + ... + 10695830.

Almost surely, 2^{2221222222112} is an apocalyptic number.

It is an amenable number.

2221222222112 is an abundant number, since it is smaller than the sum of its proper divisors (2342637277528).

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

2221222222112 is a wasteful number, since it uses less digits than its factorization.

2221222222112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21182085 (or 21182077 counting only the distinct ones).

The product of its digits is 1024, while the sum is 23.

Adding to 2221222222112 its reverse (2112222221222), we get a palindrome (4333444443334).

The spelling of 2221222222112 in words is "two trillion, two hundred twenty-one billion, two hundred twenty-two million, two hundred twenty-two thousand, one hundred twelve".