22221220111012 has 48 divisors (see below), whose sum is σ = 42520459206400. Its totient is φ = 10099406903040.

The previous prime is 22221220110959. The next prime is 22221220111037. The reversal of 22221220111012 is 21011102212222.

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 15 ways as a sum of consecutive naturals, for example, 5579289 + ... + 8693152.

Almost surely, 2^{22221220111012} is an apocalyptic number.

It is an amenable number.

22221220111012 is a deficient number, since it is larger than the sum of its proper divisors (20299239095388).

22221220111012 is a wasteful number, since it uses less digits than its factorization.

22221220111012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14272916 (or 14272914 counting only the distinct ones).

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

Adding to 22221220111012 its reverse (21011102212222), we get a palindrome (43232322323234).

The spelling of 22221220111012 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred twenty million, one hundred eleven thousand, twelve".