422217091 has 2 divisors, whose sum is σ = 422217092. Its totient is φ = 422217090.

The previous prime is 422217073. The next prime is 422217097. The reversal of 422217091 is 190712224.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 422217091 - 2⁹ = 422216579 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (422217097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211108545 + 211108546.

It is an arithmetic number, because the mean of its divisors is an integer number (211108546).

Almost surely, 2^422217091 is an apocalyptic number.

422217091 is a deficient number, since it is larger than the sum of its proper divisors (1).

422217091 is an equidigital number, since it uses as much as digits as its factorization.

422217091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 422217091 is about 20547.9218170597. The cubic root of 422217091 is about 750.2026658231.

The spelling of 422217091 in words is "four hundred twenty-two million, two hundred seventeen thousand, ninety-one".