111217027897 has 2 divisors, whose sum is σ = 111217027898. Its totient is φ = 111217027896.

The previous prime is 111217027861. The next prime is 111217027913. The reversal of 111217027897 is 798720712111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96159529216 + 15057498681 = 310096^2 + 122709^2 .

It is a cyclic number.

It is not a de Polignac number, because 111217027897 - 2²⁷ = 111082810169 is a prime.

It is not a weakly prime, because it can be changed into another prime (111217027837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55608513948 + 55608513949.

It is an arithmetic number, because the mean of its divisors is an integer number (55608513949).

Almost surely, 2^111217027897 is an apocalyptic number.

It is an amenable number.

111217027897 is a deficient number, since it is larger than the sum of its proper divisors (1).

111217027897 is an equidigital number, since it uses as much as digits as its factorization.

111217027897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 98784, while the sum is 46.

The spelling of 111217027897 in words is "one hundred eleven billion, two hundred seventeen million, twenty-seven thousand, eight hundred ninety-seven".