22112122200021 has 12 divisors (see below), whose sum is σ = 36502550933472. Its totient is φ = 12635498399976.

The previous prime is 22112122200017. The next prime is 22112122200041. The reversal of 22112122200021 is 12000222121122.

It is a happy number.

22112122200021 is a `hidden beast` number, since 2 + 211 + 212 + 220 + 0 + 0 + 21 = 666.

It is not a de Polignac number, because 22112122200021 - 2² = 22112122200017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22112122199967 and 22112122200003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22112122200041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 175493033271 + ... + 175493033396.

It is an arithmetic number, because the mean of its divisors is an integer number (3041879244456).

Almost surely, 2^{22112122200021} is an apocalyptic number.

22112122200021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22112122200021 is a deficient number, since it is larger than the sum of its proper divisors (14390428733451).

22112122200021 is a wasteful number, since it uses less digits than its factorization.

22112122200021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350986066680 (or 350986066677 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 22112122200021 its reverse (12000222121122), we get a palindrome (34112344321143).

The spelling of 22112122200021 in words is "twenty-two trillion, one hundred twelve billion, one hundred twenty-two million, two hundred thousand, twenty-one".