422310221 has 4 divisors (see below), whose sum is σ = 427656000. Its totient is φ = 416964444.

The previous prime is 422310211. The next prime is 422310223. The reversal of 422310221 is 122013224.

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 a de Polignac number, because none of the positive numbers 2^k-422310221 is a prime.

It is a super-2 number, since 2×422310221² = 356691845522137682, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 422310221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422310223) 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, 2672771 + ... + 2672928.

It is an arithmetic number, because the mean of its divisors is an integer number (106914000).

Almost surely, 2^422310221 is an apocalyptic number.

It is an amenable number.

422310221 is a deficient number, since it is larger than the sum of its proper divisors (5345779).

422310221 is an equidigital number, since it uses as much as digits as its factorization.

422310221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5345778.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 422310221 is about 20550.1878580221. The cubic root of 422310221 is about 750.2578201023.

Adding to 422310221 its reverse (122013224), we get a palindrome (544323445).

The spelling of 422310221 in words is "four hundred twenty-two million, three hundred ten thousand, two hundred twenty-one".