22220012010021 has 16 divisors (see below), whose sum is σ = 33892623004800. Its totient is φ = 12684565813248.

The previous prime is 22220012009963. The next prime is 22220012010047. The reversal of 22220012010021 is 12001021002222.

It is not a de Polignac number, because 22220012010021 - 2⁹ = 22220012009509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22220012010071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 524307756 + ... + 524350133.

It is an arithmetic number, because the mean of its divisors is an integer number (2118288937800).

Almost surely, 2^{22220012010021} is an apocalyptic number.

22220012010021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22220012010021 is a deficient number, since it is larger than the sum of its proper divisors (11672610994779).

22220012010021 is a wasteful number, since it uses less digits than its factorization.

22220012010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1048658908.

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

Adding to 22220012010021 its reverse (12001021002222), we get a palindrome (34221033012243).

The spelling of 22220012010021 in words is "twenty-two trillion, two hundred twenty billion, twelve million, ten thousand, twenty-one".