111489207197 has 2 divisors, whose sum is σ = 111489207198. Its totient is φ = 111489207196.

The previous prime is 111489207163. The next prime is 111489207199. The reversal of 111489207197 is 791702984111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79211850916 + 32277356281 = 281446^2 + 179659^2 .

It is a cyclic number.

It is not a de Polignac number, because 111489207197 - 2¹⁰ = 111489206173 is a prime.

Together with 111489207199, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111489207199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55744603598 + 55744603599.

It is an arithmetic number, because the mean of its divisors is an integer number (55744603599).

Almost surely, 2^111489207197 is an apocalyptic number.

It is an amenable number.

111489207197 is a deficient number, since it is larger than the sum of its proper divisors (1).

111489207197 is an equidigital number, since it uses as much as digits as its factorization.

111489207197 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 111489207197 in words is "one hundred eleven billion, four hundred eighty-nine million, two hundred seven thousand, one hundred ninety-seven".