422217073 has 2 divisors, whose sum is σ = 422217074. Its totient is φ = 422217072.

The previous prime is 422217013. The next prime is 422217091. The reversal of 422217073 is 370712224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 251444449 + 170772624 = 15857^2 + 13068^2 .

It is a cyclic number.

It is not a de Polignac number, because 422217073 - 2¹³ = 422208881 is a prime.

It is equal to p_22456270 and since 422217073 and 22456270 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (422217013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211108536 + 211108537.

It is an arithmetic number, because the mean of its divisors is an integer number (211108537).

Almost surely, 2^422217073 is an apocalyptic number.

It is an amenable number.

422217073 is a deficient number, since it is larger than the sum of its proper divisors (1).

422217073 is an equidigital number, since it uses as much as digits as its factorization.

422217073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 422217073 is about 20547.9213790592. The cubic root of 422217073 is about 750.2026551622.

Adding to 422217073 its reverse (370712224), we get a palindrome (792929297).

It can be divided in two parts, 42221 and 7073, that added together give a palindrome (49294).

The spelling of 422217073 in words is "four hundred twenty-two million, two hundred seventeen thousand, seventy-three".