422334221 has 6 divisors (see below), whose sum is σ = 437400522. Its totient is φ = 407770160.

The previous prime is 422334203. The next prime is 422334229. The reversal of 422334221 is 122433224.

It can be written as a sum of positive squares in 3 ways, for example, as 41538025 + 380796196 = 6445^2 + 19514^2 .

It is a de Polignac number, because none of the positive numbers 2^k-422334221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422334229) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 250250 + ... + 251931.

It is an arithmetic number, because the mean of its divisors is an integer number (72900087).

Almost surely, 2^422334221 is an apocalyptic number.

It is an amenable number.

422334221 is a deficient number, since it is larger than the sum of its proper divisors (15066301).

422334221 is an equidigital number, since it uses as much as digits as its factorization.

422334221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502239 (or 502210 counting only the distinct ones).

The product of its digits is 2304, while the sum is 23.

The square root of 422334221 is about 20550.7717859938. The cubic root of 422334221 is about 750.2720322823.

Adding to 422334221 its reverse (122433224), we get a palindrome (544767445).

The spelling of 422334221 in words is "four hundred twenty-two million, three hundred thirty-four thousand, two hundred twenty-one".