10021116817697 has 2 divisors, whose sum is σ = 10021116817698. Its totient is φ = 10021116817696.

The previous prime is 10021116817667. The next prime is 10021116817711. The reversal of 10021116817697 is 79671861112001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10016819884096 + 4296933601 = 3164936^2 + 65551^2 .

It is a cyclic number.

It is not a de Polignac number, because 10021116817697 - 2¹⁰ = 10021116816673 is a prime.

It is not a weakly prime, because it can be changed into another prime (10021116817667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5010558408848 + 5010558408849.

It is an arithmetic number, because the mean of its divisors is an integer number (5010558408849).

Almost surely, 2^{10021116817697} is an apocalyptic number.

It is an amenable number.

10021116817697 is a deficient number, since it is larger than the sum of its proper divisors (1).

10021116817697 is an equidigital number, since it uses as much as digits as its factorization.

10021116817697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 254016, while the sum is 50.

Adding to 10021116817697 its reverse (79671861112001), we get a palindrome (89692977929698).

The spelling of 10021116817697 in words is "ten trillion, twenty-one billion, one hundred sixteen million, eight hundred seventeen thousand, six hundred ninety-seven".