111101999773 has 2 divisors, whose sum is σ = 111101999774. Its totient is φ = 111101999772.

The previous prime is 111101999753. The next prime is 111101999779. The reversal of 111101999773 is 377999101111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111007579684 + 94420089 = 333178^2 + 9717^2 .

It is a cyclic number.

It is not a de Polignac number, because 111101999773 - 2¹⁷ = 111101868701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111101999779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55550999886 + 55550999887.

It is an arithmetic number, because the mean of its divisors is an integer number (55550999887).

Almost surely, 2^111101999773 is an apocalyptic number.

It is an amenable number.

111101999773 is a deficient number, since it is larger than the sum of its proper divisors (1).

111101999773 is an equidigital number, since it uses as much as digits as its factorization.

111101999773 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 107163, while the sum is 49.

The spelling of 111101999773 in words is "one hundred eleven billion, one hundred one million, nine hundred ninety-nine thousand, seven hundred seventy-three".