1210117827817 has 2 divisors, whose sum is σ = 1210117827818. Its totient is φ = 1210117827816.

The previous prime is 1210117827803. The next prime is 1210117827827. The reversal of 1210117827817 is 7187287110121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1065032256016 + 145085571801 = 1032004^2 + 380901^2 .

It is a cyclic number.

It is not a de Polignac number, because 1210117827817 - 2¹⁵ = 1210117795049 is a prime.

It is not a weakly prime, because it can be changed into another prime (1210117827827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605058913908 + 605058913909.

It is an arithmetic number, because the mean of its divisors is an integer number (605058913909).

Almost surely, 2^{1210117827817} is an apocalyptic number.

It is an amenable number.

1210117827817 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210117827817 is an equidigital number, since it uses as much as digits as its factorization.

1210117827817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 87808, while the sum is 46.

The spelling of 1210117827817 in words is "one trillion, two hundred ten billion, one hundred seventeen million, eight hundred twenty-seven thousand, eight hundred seventeen".