422204242021 has 2 divisors, whose sum is σ = 422204242022. Its totient is φ = 422204242020.

The previous prime is 422204242001. The next prime is 422204242027. The reversal of 422204242021 is 120242402224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 418720291396 + 3483950625 = 647086^2 + 59025^2 .

It is a cyclic number.

It is not a de Polignac number, because 422204242021 - 2⁵ = 422204241989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (422204242027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211102121010 + 211102121011.

It is an arithmetic number, because the mean of its divisors is an integer number (211102121011).

Almost surely, 2^422204242021 is an apocalyptic number.

It is an amenable number.

422204242021 is a deficient number, since it is larger than the sum of its proper divisors (1).

422204242021 is an equidigital number, since it uses as much as digits as its factorization.

422204242021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4096, while the sum is 25.

Adding to 422204242021 its reverse (120242402224), we get a palindrome (542446644245).

It can be divided in two parts, 422204 and 242021, that added together give a square (664225 = 815²).

The spelling of 422204242021 in words is "four hundred twenty-two billion, two hundred four million, two hundred forty-two thousand, twenty-one".