422091207215 has 4 divisors (see below), whose sum is σ = 506509448664. Its totient is φ = 337672965768.

The previous prime is 422091207211. The next prime is 422091207227. The reversal of 422091207215 is 512702190224.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 422091207215 - 2² = 422091207211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422091207211) 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, 42209120717 + ... + 42209120726.

It is an arithmetic number, because the mean of its divisors is an integer number (126627362166).

Almost surely, 2^422091207215 is an apocalyptic number.

422091207215 is a deficient number, since it is larger than the sum of its proper divisors (84418241449).

422091207215 is an equidigital number, since it uses as much as digits as its factorization.

422091207215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84418241448.

The product of its (nonzero) digits is 20160, while the sum is 35.

Adding to 422091207215 its reverse (512702190224), we get a palindrome (934793397439).

The spelling of 422091207215 in words is "four hundred twenty-two billion, ninety-one million, two hundred seven thousand, two hundred fifteen".