111202217816797 has 2 divisors, whose sum is σ = 111202217816798. Its totient is φ = 111202217816796.

The previous prime is 111202217816779. The next prime is 111202217816849. The reversal of 111202217816797 is 797618712202111.

Together with previous prime (111202217816779) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106249483292121 + 4952734524676 = 10307739^2 + 2225474^2 .

It is an emirp because it is prime and its reverse (797618712202111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111202217816797 - 2²⁷ = 111202083599069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111202217816197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55601108908398 + 55601108908399.

It is an arithmetic number, because the mean of its divisors is an integer number (55601108908399).

Almost surely, 2^{111202217816797} is an apocalyptic number.

It is an amenable number.

111202217816797 is a deficient number, since it is larger than the sum of its proper divisors (1).

111202217816797 is an equidigital number, since it uses as much as digits as its factorization.

111202217816797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1185408, while the sum is 55.

The spelling of 111202217816797 in words is "one hundred eleven trillion, two hundred two billion, two hundred seventeen million, eight hundred sixteen thousand, seven hundred ninety-seven".