22012200021021 has 32 divisors (see below), whose sum is σ = 35024209643520. Its totient is φ = 12023454045504.

The previous prime is 22012200021011. The next prime is 22012200021079. The reversal of 22012200021021 is 12012000221022.

It is not a de Polignac number, because 22012200021021 - 2¹¹ = 22012200018973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22012200021011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14541411 + ... + 15983648.

It is an arithmetic number, because the mean of its divisors is an integer number (1094506551360).

Almost surely, 2^{22012200021021} is an apocalyptic number.

22012200021021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22012200021021 is a deficient number, since it is larger than the sum of its proper divisors (13012009622499).

22012200021021 is a wasteful number, since it uses less digits than its factorization.

22012200021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30526585.

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

Adding to 22012200021021 its reverse (12012000221022), we get a palindrome (34024200242043).

The spelling of 22012200021021 in words is "twenty-two trillion, twelve billion, two hundred million, twenty-one thousand, twenty-one".