22112340021 has 12 divisors (see below), whose sum is σ = 32970371200. Its totient is φ = 14266025640.

The previous prime is 22112340017. The next prime is 22112340023. The reversal of 22112340021 is 12004321122.

It is a happy number.

22112340021 is a `hidden beast` number, since 221 + 1 + 23 + 400 + 21 = 666.

It is not a de Polignac number, because 22112340021 - 2² = 22112340017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22112339976 and 22112340003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22112340023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39627571 + ... + 39628128.

Almost surely, 2^22112340021 is an apocalyptic number.

It is an amenable number.

22112340021 is a deficient number, since it is larger than the sum of its proper divisors (10858031179).

22112340021 is a wasteful number, since it uses less digits than its factorization.

22112340021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79255736 (or 79255733 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 22112340021 its reverse (12004321122), we get a palindrome (34116661143).

The spelling of 22112340021 in words is "twenty-two billion, one hundred twelve million, three hundred forty thousand, twenty-one".