111198797 has 2 divisors, whose sum is σ = 111198798. Its totient is φ = 111198796.

The previous prime is 111198781. The next prime is 111198803. The reversal of 111198797 is 797891111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55636681 + 55562116 = 7459^2 + 7454^2 .

It is a cyclic number.

It is not a de Polignac number, because 111198797 - 2⁴ = 111198781 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111198707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55599398 + 55599399.

It is an arithmetic number, because the mean of its divisors is an integer number (55599399).

Almost surely, 2^111198797 is an apocalyptic number.

It is an amenable number.

111198797 is a deficient number, since it is larger than the sum of its proper divisors (1).

111198797 is an equidigital number, since it uses as much as digits as its factorization.

111198797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31752, while the sum is 44.

The square root of 111198797 is about 10545.0840205282. The cubic root of 111198797 is about 480.8762884517.

The spelling of 111198797 in words is "one hundred eleven million, one hundred ninety-eight thousand, seven hundred ninety-seven".