111100000109591 has 2 divisors, whose sum is σ = 111100000109592. Its totient is φ = 111100000109590.

The previous prime is 111100000109537. The next prime is 111100000109603. The reversal of 111100000109591 is 195901000001111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111100000109591 - 2³⁸ = 110825122202647 is a prime.

It is a super-2 number, since 2×111100000109591² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111100000100591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55550000054795 + 55550000054796.

It is an arithmetic number, because the mean of its divisors is an integer number (55550000054796).

Almost surely, 2^{111100000109591} is an apocalyptic number.

111100000109591 is a deficient number, since it is larger than the sum of its proper divisors (1).

111100000109591 is an equidigital number, since it uses as much as digits as its factorization.

111100000109591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 405, while the sum is 29.

The spelling of 111100000109591 in words is "one hundred eleven trillion, one hundred billion, one hundred nine thousand, five hundred ninety-one".