111188888881111 has 2 divisors, whose sum is σ = 111188888881112. Its totient is φ = 111188888881110.

The previous prime is 111188888881097. The next prime is 111188888881129.

111188888881111 is nontrivially palindromic in base 10.

It is a weak prime.

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 111188888881111 - 2⁵ = 111188888881079 is a prime.

111188888881111 is a strobogrammatic number because it is the same when read upside-down.

It is a zygodrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111188888681111) 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, 55594444440555 + 55594444440556.

It is an arithmetic number, because the mean of its divisors is an integer number (55594444440556).

Almost surely, 2^{111188888881111} is an apocalyptic number.

111188888881111 is a deficient number, since it is larger than the sum of its proper divisors (1).

111188888881111 is an equidigital number, since it uses as much as digits as its factorization.

111188888881111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2097152, while the sum is 64.

The spelling of 111188888881111 in words is "one hundred eleven trillion, one hundred eighty-eight billion, eight hundred eighty-eight million, eight hundred eighty-one thousand, one hundred eleven".