111166888661111 has 2 divisors, whose sum is σ = 111166888661112. Its totient is φ = 111166888661110.

The previous prime is 111166888661093. The next prime is 111166888661117.

111166888661111 is nontrivially palindromic in base 10.

It is a strong prime.

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 111166888661111 - 2¹⁴ = 111166888644727 is a prime.

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 (111166888661117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55583444330555 + 55583444330556.

It is an arithmetic number, because the mean of its divisors is an integer number (55583444330556).

Almost surely, 2^{111166888661111} is an apocalyptic number.

111166888661111 is a deficient number, since it is larger than the sum of its proper divisors (1).

111166888661111 is an equidigital number, since it uses as much as digits as its factorization.

111166888661111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 663552, while the sum is 56.

The spelling of 111166888661111 in words is "one hundred eleven trillion, one hundred sixty-six billion, eight hundred eighty-eight million, six hundred sixty-one thousand, one hundred eleven".