111001111001111 has 2 divisors, whose sum is σ = 111001111001112. Its totient is φ = 111001111001110.

The previous prime is 111001111001083. The next prime is 111001111001167. The reversal of 111001111001111 is 111100111100111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111001111001111 - 2⁶ = 111001111001047 is a prime.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 111001111001092 and 111001111001101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111001111001191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55500555500555 + 55500555500556.

It is an arithmetic number, because the mean of its divisors is an integer number (55500555500556).

Almost surely, 2^{111001111001111} is an apocalyptic number.

111001111001111 is a deficient number, since it is larger than the sum of its proper divisors (1).

111001111001111 is an equidigital number, since it uses as much as digits as its factorization.

111001111001111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1, while the sum is 11.

Adding to 111001111001111 its reverse (111100111100111), we get a palindrome (222101222101222).

The spelling of 111001111001111 in words is "one hundred eleven trillion, one billion, one hundred eleven million, one thousand, one hundred eleven".