22040217 has 12 divisors (see below), whose sum is σ = 32376240. Its totient is φ = 14444088.

The previous prime is 22040191. The next prime is 22040219. The reversal of 22040217 is 71204022.

It is not a de Polignac number, because 22040217 - 2¹² = 22036121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22040217.

It is not an unprimeable number, because it can be changed into a prime (22040219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20223 + ... + 21284.

It is an arithmetic number, because the mean of its divisors is an integer number (2698020).

Almost surely, 2^22040217 is an apocalyptic number.

It is an amenable number.

22040217 is a deficient number, since it is larger than the sum of its proper divisors (10336023).

22040217 is a wasteful number, since it uses less digits than its factorization.

22040217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41572 (or 41569 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 22040217 is about 4694.7009489423. The cubic root of 22040217 is about 280.3745709719.

Adding to 22040217 its reverse (71204022), we get a palindrome (93244239).

The spelling of 22040217 in words is "twenty-two million, forty thousand, two hundred seventeen".