111000999997 has 2 divisors, whose sum is σ = 111000999998. Its totient is φ = 111000999996.

The previous prime is 111000999947. The next prime is 111001000001. The reversal of 111000999997 is 799999000111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78343450201 + 32657549796 = 279899^2 + 180714^2 .

It is a cyclic number.

It is not a de Polignac number, because 111000999997 - 2¹¹ = 111000997949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111000999937) 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, 55500499998 + 55500499999.

It is an arithmetic number, because the mean of its divisors is an integer number (55500499999).

Almost surely, 2^111000999997 is an apocalyptic number.

It is an amenable number.

111000999997 is a deficient number, since it is larger than the sum of its proper divisors (1).

111000999997 is an equidigital number, since it uses as much as digits as its factorization.

111000999997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 413343, while the sum is 55.

The spelling of 111000999997 in words is "one hundred eleven billion, nine hundred ninety-nine thousand, nine hundred ninety-seven".