422344412221 has 2 divisors, whose sum is σ = 422344412222. Its totient is φ = 422344412220.

The previous prime is 422344412219. The next prime is 422344412227. The reversal of 422344412221 is 122214443224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 351721349721 + 70623062500 = 593061^2 + 265750^2 .

It is a cyclic number.

It is not a de Polignac number, because 422344412221 - 2¹ = 422344412219 is a prime.

Together with 422344412219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (422344412227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211172206110 + 211172206111.

It is an arithmetic number, because the mean of its divisors is an integer number (211172206111).

Almost surely, 2^422344412221 is an apocalyptic number.

It is an amenable number.

422344412221 is a deficient number, since it is larger than the sum of its proper divisors (1).

422344412221 is an equidigital number, since it uses as much as digits as its factorization.

422344412221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24576, while the sum is 31.

Adding to 422344412221 its reverse (122214443224), we get a palindrome (544558855445).

The spelling of 422344412221 in words is "four hundred twenty-two billion, three hundred forty-four million, four hundred twelve thousand, two hundred twenty-one".