22331223217 has 2 divisors, whose sum is σ = 22331223218. Its totient is φ = 22331223216.

The previous prime is 22331223199. The next prime is 22331223259. The reversal of 22331223217 is 71232213322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21066780736 + 1264442481 = 145144^2 + 35559^2 .

It is a cyclic number.

It is not a de Polignac number, because 22331223217 - 2¹⁵ = 22331190449 is a prime.

It is a super-3 number, since 3×22331223217³ (a number of 32 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (22331221217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11165611608 + 11165611609.

It is an arithmetic number, because the mean of its divisors is an integer number (11165611609).

Almost surely, 2^22331223217 is an apocalyptic number.

It is an amenable number.

22331223217 is a deficient number, since it is larger than the sum of its proper divisors (1).

22331223217 is an equidigital number, since it uses as much as digits as its factorization.

22331223217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 28.

Adding to 22331223217 its reverse (71232213322), we get a palindrome (93563436539).

The spelling of 22331223217 in words is "twenty-two billion, three hundred thirty-one million, two hundred twenty-three thousand, two hundred seventeen".