111199001897 has 2 divisors, whose sum is σ = 111199001898. Its totient is φ = 111199001896.

The previous prime is 111199001891. The next prime is 111199001909. The reversal of 111199001897 is 798100991111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71320509481 + 39878492416 = 267059^2 + 199696^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111199001897 is a prime.

It is not a weakly prime, because it can be changed into another prime (111199001891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55599500948 + 55599500949.

It is an arithmetic number, because the mean of its divisors is an integer number (55599500949).

Almost surely, 2^111199001897 is an apocalyptic number.

It is an amenable number.

111199001897 is a deficient number, since it is larger than the sum of its proper divisors (1).

111199001897 is an equidigital number, since it uses as much as digits as its factorization.

111199001897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 47.

The spelling of 111199001897 in words is "one hundred eleven billion, one hundred ninety-nine million, one thousand, eight hundred ninety-seven".