422222287 has 2 divisors, whose sum is σ = 422222288. Its totient is φ = 422222286.

The previous prime is 422222267. The next prime is 422222299. The reversal of 422222287 is 782222224.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 422222287 - 2⁷ = 422222159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (422222257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211111143 + 211111144.

It is an arithmetic number, because the mean of its divisors is an integer number (211111144).

Almost surely, 2^422222287 is an apocalyptic number.

422222287 is a deficient number, since it is larger than the sum of its proper divisors (1).

422222287 is an equidigital number, since it uses as much as digits as its factorization.

422222287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14336, while the sum is 31.

The square root of 422222287 is about 20548.0482528147. The cubic root of 422222287 is about 750.2057432582.

The spelling of 422222287 in words is "four hundred twenty-two million, two hundred twenty-two thousand, two hundred eighty-seven".