12000122200021 has 2 divisors, whose sum is σ = 12000122200022. Its totient is φ = 12000122200020.

The previous prime is 12000122200013. The next prime is 12000122200037. The reversal of 12000122200021 is 12000222100021.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9984247565796 + 2015874634225 = 3159786^2 + 1419815^2 .

It is a cyclic number.

It is not a de Polignac number, because 12000122200021 - 2³ = 12000122200013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12000122199974 and 12000122200010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12000122200051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000061100010 + 6000061100011.

It is an arithmetic number, because the mean of its divisors is an integer number (6000061100011).

Almost surely, 2^{12000122200021} is an apocalyptic number.

It is an amenable number.

12000122200021 is a deficient number, since it is larger than the sum of its proper divisors (1).

12000122200021 is an equidigital number, since it uses as much as digits as its factorization.

12000122200021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 12000122200021 its reverse (12000222100021), we get a palindrome (24000344300042).

The spelling of 12000122200021 in words is "twelve trillion, one hundred twenty-two million, two hundred thousand, twenty-one".