110111891 has 2 divisors, whose sum is σ = 110111892. Its totient is φ = 110111890.

The previous prime is 110111819. The next prime is 110111923. The reversal of 110111891 is 198111011.

Together with previous prime (110111819) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 110111891 - 2¹⁴ = 110095507 is a prime.

It is not a weakly prime, because it can be changed into another prime (110111191) 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, 55055945 + 55055946.

It is an arithmetic number, because the mean of its divisors is an integer number (55055946).

Almost surely, 2^110111891 is an apocalyptic number.

110111891 is a deficient number, since it is larger than the sum of its proper divisors (1).

110111891 is an equidigital number, since it uses as much as digits as its factorization.

110111891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 23.

The square root of 110111891 is about 10493.4213200462. The cubic root of 110111891 is about 479.3043902772.

The spelling of 110111891 in words is "one hundred ten million, one hundred eleven thousand, eight hundred ninety-one".