20222122000021 has 4 divisors (see below), whose sum is σ = 20326899834412. Its totient is φ = 20117344165632.

The previous prime is 20222122000001. The next prime is 20222122000039. The reversal of 20222122000021 is 12000022122202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15078815091025 + 5143306908996 = 3883145^2 + 2267886^2 .

It is a cyclic number.

It is not a de Polignac number, because 20222122000021 - 2³³ = 20213532065429 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20222121999959 and 20222122000004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20222122000001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52388916906 + ... + 52388917291.

It is an arithmetic number, because the mean of its divisors is an integer number (5081724958603).

Almost surely, 2^{20222122000021} is an apocalyptic number.

It is an amenable number.

20222122000021 is a deficient number, since it is larger than the sum of its proper divisors (104777834391).

20222122000021 is a wasteful number, since it uses less digits than its factorization.

20222122000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104777834390.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20222122000021 its reverse (12000022122202), we get a palindrome (32222144122223).

The spelling of 20222122000021 in words is "twenty trillion, two hundred twenty-two billion, one hundred twenty-two million, twenty-one", and thus it is an aban number.