21120012000222 has 48 divisors (see below), whose sum is σ = 44157958158720. Its totient is φ = 6733678579056.

The previous prime is 21120012000203. The next prime is 21120012000289. The reversal of 21120012000222 is 22200021002112.

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 23 ways as a sum of consecutive naturals, for example, 104129673 + ... + 104332299.

It is an arithmetic number, because the mean of its divisors is an integer number (919957461640).

Almost surely, 2^{21120012000222} is an apocalyptic number.

21120012000222 is an abundant number, since it is smaller than the sum of its proper divisors (23037946158498).

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

21120012000222 is a wasteful number, since it uses less digits than its factorization.

21120012000222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235517 (or 235494 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 21120012000222 its reverse (22200021002112), we get a palindrome (43320033002334).

The spelling of 21120012000222 in words is "twenty-one trillion, one hundred twenty billion, twelve million, two hundred twenty-two", and thus it is an aban number.