22168217 has 6 divisors (see below), whose sum is σ = 22784958. Its totient is φ = 21567744.

The previous prime is 22168199. The next prime is 22168219. The reversal of 22168217 is 71286122.

It can be written as a sum of positive squares in 3 ways, for example, as 18913801 + 3254416 = 4349^2 + 1804^2 .

It is not a de Polignac number, because 22168217 - 2⁸ = 22167961 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22168217.

It is not an unprimeable number, because it can be changed into a prime (22168219) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6728 + ... + 9465.

It is an arithmetic number, because the mean of its divisors is an integer number (3797493).

Almost surely, 2^22168217 is an apocalyptic number.

It is an amenable number.

22168217 is a deficient number, since it is larger than the sum of its proper divisors (616741).

22168217 is an equidigital number, since it uses as much as digits as its factorization.

22168217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16267 (or 16230 counting only the distinct ones).

The product of its digits is 2688, while the sum is 29.

The square root of 22168217 is about 4708.3136046784. The cubic root of 22168217 is about 280.9162881808.

The spelling of 22168217 in words is "twenty-two million, one hundred sixty-eight thousand, two hundred seventeen".