12222020210021 has 2 divisors, whose sum is σ = 12222020210022. Its totient is φ = 12222020210020.

The previous prime is 12222020209999. The next prime is 12222020210161. The reversal of 12222020210021 is 12001202022221.

It is a happy number.

12222020210021 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., 9702514792996 + 2519505417025 = 3114886^2 + 1587295^2 .

It is a cyclic number.

It is not a de Polignac number, because 12222020210021 - 2²⁶ = 12221953101157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12222020219021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6111010105010 + 6111010105011.

It is an arithmetic number, because the mean of its divisors is an integer number (6111010105011).

Almost surely, 2^{12222020210021} is an apocalyptic number.

It is an amenable number.

12222020210021 is a deficient number, since it is larger than the sum of its proper divisors (1).

12222020210021 is an equidigital number, since it uses as much as digits as its factorization.

12222020210021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 12222020210021 its reverse (12001202022221), we get a palindrome (24223222232242).

The spelling of 12222020210021 in words is "twelve trillion, two hundred twenty-two billion, twenty million, two hundred ten thousand, twenty-one".