22112212000021 has 64 divisors (see below), whose sum is σ = 26909080289280. Its totient is φ = 17894872512000.

The previous prime is 22112212000019. The next prime is 22112212000033. The reversal of 22112212000021 is 12000021221122.

It is a happy number.

It is not a de Polignac number, because 22112212000021 - 2¹ = 22112212000019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22112211999959 and 22112212000004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22112212000091) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2242840390 + ... + 2242850248.

It is an arithmetic number, because the mean of its divisors is an integer number (420454379520).

Almost surely, 2^{22112212000021} is an apocalyptic number.

It is an amenable number.

22112212000021 is a deficient number, since it is larger than the sum of its proper divisors (4796868289259).

22112212000021 is a wasteful number, since it uses less digits than its factorization.

22112212000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11618.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22112212000021 its reverse (12000021221122), we get a palindrome (34112233221143).

It can be divided in two parts, 221122 and 12000021, that multiplied together give a palindrome (2653468643562).

The spelling of 22112212000021 in words is "twenty-two trillion, one hundred twelve billion, two hundred twelve million, twenty-one", and thus it is an aban number.