2312223321217 has 2 divisors, whose sum is σ = 2312223321218. Its totient is φ = 2312223321216.

The previous prime is 2312223321179. The next prime is 2312223321229. The reversal of 2312223321217 is 7121233222132.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1454300931136 + 857922390081 = 1205944^2 + 926241^2 .

It is a cyclic number.

It is not a de Polignac number, because 2312223321217 - 2¹¹ = 2312223319169 is a prime.

It is a super-2 number, since 2×2312223321217² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2312223321257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1156111660608 + 1156111660609.

It is an arithmetic number, because the mean of its divisors is an integer number (1156111660609).

Almost surely, 2^{2312223321217} is an apocalyptic number.

It is an amenable number.

2312223321217 is a deficient number, since it is larger than the sum of its proper divisors (1).

2312223321217 is an equidigital number, since it uses as much as digits as its factorization.

2312223321217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 31.

Adding to 2312223321217 its reverse (7121233222132), we get a palindrome (9433456543349).

The spelling of 2312223321217 in words is "two trillion, three hundred twelve billion, two hundred twenty-three million, three hundred twenty-one thousand, two hundred seventeen".