2221317 has 48 divisors (see below), whose sum is σ = 4049280. Its totient is φ = 1197504.

The previous prime is 2221301. The next prime is 2221321. The reversal of 2221317 is 7131222.

It is not a de Polignac number, because 2221317 - 2⁴ = 2221301 is a prime.

2221317 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2221317.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221217) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 30393 + ... + 30465.

It is an arithmetic number, because the mean of its divisors is an integer number (84360).

2^2221317 is an apocalyptic number.

2221317 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

2221317 is a deficient number, since it is larger than the sum of its proper divisors (1827963).

2221317 is a wasteful number, since it uses less digits than its factorization.

2221317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119 (or 106 counting only the distinct ones).

The product of its digits is 168, while the sum is 18.

The square root of 2221317 is about 1490.4083333100. The cubic root of 2221317 is about 130.4778665065.

Adding to 2221317 its reverse (7131222), we get a palindrome (9352539).

The spelling of 2221317 in words is "two million, two hundred twenty-one thousand, three hundred seventeen".