22112121220012 has 48 divisors (see below), whose sum is σ = 39497943817024. Its totient is φ = 10828546560000.

The previous prime is 22112121219983. The next prime is 22112121220039. The reversal of 22112121220012 is 21002212121122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 917389153 + ... + 917413255.

Almost surely, 2^{22112121220012} is an apocalyptic number.

It is an amenable number.

22112121220012 is a deficient number, since it is larger than the sum of its proper divisors (17385822597012).

22112121220012 is a wasteful number, since it uses less digits than its factorization.

22112121220012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40010 (or 40008 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 22112121220012 its reverse (21002212121122), we get a palindrome (43114333341134).

The spelling of 22112121220012 in words is "twenty-two trillion, one hundred twelve billion, one hundred twenty-one million, two hundred twenty thousand, twelve".