1111188811111 has 2 divisors, whose sum is σ = 1111188811112. Its totient is φ = 1111188811110.

The previous prime is 1111188811099. The next prime is 1111188811163.

1111188811111 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 1111188811111 - 2⁵ = 1111188811079 is a prime.

1111188811111 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 (1111188811171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555594405555 + 555594405556.

It is an arithmetic number, because the mean of its divisors is an integer number (555594405556).

Almost surely, 2^{1111188811111} is an apocalyptic number.

1111188811111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111188811111 is an equidigital number, since it uses as much as digits as its factorization.

1111188811111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 512, while the sum is 34.

The spelling of 1111188811111 in words is "one trillion, one hundred eleven billion, one hundred eighty-eight million, eight hundred eleven thousand, one hundred eleven".