22020317 has 4 divisors (see below), whose sum is σ = 24022176. Its totient is φ = 20018460.

The previous prime is 22020311. The next prime is 22020319. The reversal of 22020317 is 71302022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 22020317 - 2²⁴ = 5243101 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22020295 and 22020304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22020311) 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, 1000913 + ... + 1000934.

It is an arithmetic number, because the mean of its divisors is an integer number (6005544).

Almost surely, 2^22020317 is an apocalyptic number.

It is an amenable number.

22020317 is a deficient number, since it is larger than the sum of its proper divisors (2001859).

22020317 is a wasteful number, since it uses less digits than its factorization.

22020317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2001858.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 22020317 is about 4692.5810595023. The cubic root of 22020317 is about 280.2901626374.

Adding to 22020317 its reverse (71302022), we get a palindrome (93322339).

The spelling of 22020317 in words is "twenty-two million, twenty thousand, three hundred seventeen".