422313221 has 4 divisors (see below), whose sum is σ = 460705344. Its totient is φ = 383921100.

The previous prime is 422313193. The next prime is 422313253. The reversal of 422313221 is 122313224.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 422313221 - 2¹⁰ = 422312197 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 422313193 and 422313202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422313721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19196045 + ... + 19196066.

It is an arithmetic number, because the mean of its divisors is an integer number (115176336).

Almost surely, 2^422313221 is an apocalyptic number.

It is an amenable number.

422313221 is a deficient number, since it is larger than the sum of its proper divisors (38392123).

422313221 is a wasteful number, since it uses less digits than its factorization.

422313221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38392122.

The product of its digits is 576, while the sum is 20.

The square root of 422313221 is about 20550.2608499260. The cubic root of 422313221 is about 750.2595966543.

Adding to 422313221 its reverse (122313224), we get a palindrome (544626445).

The spelling of 422313221 in words is "four hundred twenty-two million, three hundred thirteen thousand, two hundred twenty-one".