22111112200021 has 16 divisors (see below), whose sum is σ = 23863642848640. Its totient is φ = 20366010947520.

The previous prime is 22111112200019. The next prime is 22111112200081. The reversal of 22111112200021 is 12000221111122.

It is a cyclic number.

It is not a de Polignac number, because 22111112200021 - 2¹ = 22111112200019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22111112199968 and 22111112200004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22111112200081) 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, 10289536 + ... + 12251398.

It is an arithmetic number, because the mean of its divisors is an integer number (1491477678040).

Almost surely, 2^{22111112200021} is an apocalyptic number.

It is an amenable number.

22111112200021 is a deficient number, since it is larger than the sum of its proper divisors (1752530648619).

22111112200021 is a wasteful number, since it uses less digits than its factorization.

22111112200021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1963756.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 22111112200021 its reverse (12000221111122), we get a palindrome (34111333311143).

The spelling of 22111112200021 in words is "twenty-two trillion, one hundred eleven billion, one hundred twelve million, two hundred thousand, twenty-one".