422321111 has 2 divisors, whose sum is σ = 422321112. Its totient is φ = 422321110.

The previous prime is 422321099. The next prime is 422321129. The reversal of 422321111 is 111123224.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-422321111 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 422321111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (422321131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211160555 + 211160556.

It is an arithmetic number, because the mean of its divisors is an integer number (211160556).

Almost surely, 2^422321111 is an apocalyptic number.

422321111 is a deficient number, since it is larger than the sum of its proper divisors (1).

422321111 is an equidigital number, since it uses as much as digits as its factorization.

422321111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96, while the sum is 17.

The square root of 422321111 is about 20550.4528173955. The cubic root of 422321111 is about 750.2642689457.

Adding to 422321111 its reverse (111123224), we get a palindrome (533444335).

The spelling of 422321111 in words is "four hundred twenty-two million, three hundred twenty-one thousand, one hundred eleven".