12213203200021 has 2 divisors, whose sum is σ = 12213203200022. Its totient is φ = 12213203200020.

The previous prime is 12213203200013. The next prime is 12213203200069. The reversal of 12213203200021 is 12000230231221.

12213203200021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12205310832100 + 7892367921 = 3493610^2 + 88839^2 .

It is a cyclic number.

It is not a de Polignac number, because 12213203200021 - 2³ = 12213203200013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12213203200091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106601600010 + 6106601600011.

It is an arithmetic number, because the mean of its divisors is an integer number (6106601600011).

Almost surely, 2^{12213203200021} is an apocalyptic number.

It is an amenable number.

12213203200021 is a deficient number, since it is larger than the sum of its proper divisors (1).

12213203200021 is an equidigital number, since it uses as much as digits as its factorization.

12213203200021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 12213203200021 its reverse (12000230231221), we get a palindrome (24213433431242).

The spelling of 12213203200021 in words is "twelve trillion, two hundred thirteen billion, two hundred three million, two hundred thousand, twenty-one".