8891012101997 has 2 divisors, whose sum is σ = 8891012101998. Its totient is φ = 8891012101996.

The previous prime is 8891012101927. The next prime is 8891012102033. The reversal of 8891012101997 is 7991012101988.

8891012101997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5817883896841 + 3073128205156 = 2412029^2 + 1753034^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8891012101997 is a prime.

It is a super-2 number, since 2×8891012101997² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8891012101927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4445506050998 + 4445506050999.

It is an arithmetic number, because the mean of its divisors is an integer number (4445506050999).

Almost surely, 2^{8891012101997} is an apocalyptic number.

It is an amenable number.

8891012101997 is a deficient number, since it is larger than the sum of its proper divisors (1).

8891012101997 is an equidigital number, since it uses as much as digits as its factorization.

8891012101997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 56.

Subtracting from 8891012101997 its reverse (7991012101988), we obtain a palindrome (900000000009).

The spelling of 8891012101997 in words is "eight trillion, eight hundred ninety-one billion, twelve million, one hundred one thousand, nine hundred ninety-seven".