22123212317 has 2 divisors, whose sum is σ = 22123212318. Its totient is φ = 22123212316.

The previous prime is 22123212311. The next prime is 22123212337. The reversal of 22123212317 is 71321232122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21959090596 + 164121721 = 148186^2 + 12811^2 .

It is a cyclic number.

It is not a de Polignac number, because 22123212317 - 2⁴ = 22123212301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22123212311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11061606158 + 11061606159.

It is an arithmetic number, because the mean of its divisors is an integer number (11061606159).

Almost surely, 2^22123212317 is an apocalyptic number.

It is an amenable number.

22123212317 is a deficient number, since it is larger than the sum of its proper divisors (1).

22123212317 is an equidigital number, since it uses as much as digits as its factorization.

22123212317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 26.

Adding to 22123212317 its reverse (71321232122), we get a palindrome (93444444439).

The spelling of 22123212317 in words is "twenty-two billion, one hundred twenty-three million, two hundred twelve thousand, three hundred seventeen".