8517222113 has 2 divisors, whose sum is σ = 8517222114. Its totient is φ = 8517222112.

The previous prime is 8517222047. The next prime is 8517222127. The reversal of 8517222113 is 3112227158.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7378294609 + 1138927504 = 85897^2 + 33748^2 .

It is a cyclic number.

It is not a de Polignac number, because 8517222113 - 2⁸ = 8517221857 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8517222113.

It is not a weakly prime, because it can be changed into another prime (8517222163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4258611056 + 4258611057.

It is an arithmetic number, because the mean of its divisors is an integer number (4258611057).

Almost surely, 2^8517222113 is an apocalyptic number.

It is an amenable number.

8517222113 is a deficient number, since it is larger than the sum of its proper divisors (1).

8517222113 is an equidigital number, since it uses as much as digits as its factorization.

8517222113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 32.

The square root of 8517222113 is about 92288.7973320706. The cubic root of 8517222113 is about 2042.2049490630.

The spelling of 8517222113 in words is "eight billion, five hundred seventeen million, two hundred twenty-two thousand, one hundred thirteen".