12220020202021 has 2 divisors, whose sum is σ = 12220020202022. Its totient is φ = 12220020202020.

The previous prime is 12220020202007. The next prime is 12220020202087. The reversal of 12220020202021 is 12020202002221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7977404824900 + 4242615377121 = 2824430^2 + 2059761^2 .

It is a cyclic number.

It is not a de Polignac number, because 12220020202021 - 2³³ = 12211430267429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12220020201986 and 12220020202004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12220020202001) 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 as a sum of consecutive naturals, namely, 6110010101010 + 6110010101011.

It is an arithmetic number, because the mean of its divisors is an integer number (6110010101011).

Almost surely, 2^{12220020202021} is an apocalyptic number.

It is an amenable number.

12220020202021 is a deficient number, since it is larger than the sum of its proper divisors (1).

12220020202021 is an equidigital number, since it uses as much as digits as its factorization.

12220020202021 is an odious number, because the sum of its binary digits is odd.

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

Adding to 12220020202021 its reverse (12020202002221), we get a palindrome (24240222204242).

The spelling of 12220020202021 in words is "twelve trillion, two hundred twenty billion, twenty million, two hundred two thousand, twenty-one".