1222517 has 12 divisors (see below), whose sum is σ = 1350720. Its totient is φ = 1102896.

The previous prime is 1222513. The next prime is 1222523. The reversal of 1222517 is 7152221.

It is not a de Polignac number, because 1222517 - 2² = 1222513 is a prime.

It is a Duffinian number.

Its product of digits (280) is a multiple of the sum of its prime factors (140).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222513) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25988 + ... + 26034.

It is an arithmetic number, because the mean of its divisors is an integer number (112560).

2^1222517 is an apocalyptic number.

It is an amenable number.

1222517 is a deficient number, since it is larger than the sum of its proper divisors (128203).

1222517 is an equidigital number, since it uses as much as digits as its factorization.

1222517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140 (or 103 counting only the distinct ones).

The product of its digits is 280, while the sum is 20.

The square root of 1222517 is about 1105.6749070138. The cubic root of 1222517 is about 106.9264058529.

Adding to 1222517 its reverse (7152221), we get a palindrome (8374738).

The spelling of 1222517 in words is "one million, two hundred twenty-two thousand, five hundred seventeen".