111111001191011 has 2 divisors, whose sum is σ = 111111001191012. Its totient is φ = 111111001191010.

The previous prime is 111111001190989. The next prime is 111111001191103. The reversal of 111111001191011 is 110191100111111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111111001191011 - 2³⁴ = 111093821321827 is a prime.

It is not a weakly prime, because it can be changed into another prime (111111001193011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55555500595505 + 55555500595506.

It is an arithmetic number, because the mean of its divisors is an integer number (55555500595506).

Almost surely, 2^{111111001191011} is an apocalyptic number.

111111001191011 is a deficient number, since it is larger than the sum of its proper divisors (1).

111111001191011 is an equidigital number, since it uses as much as digits as its factorization.

111111001191011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9, while the sum is 20.

The spelling of 111111001191011 in words is "one hundred eleven trillion, one hundred eleven billion, one million, one hundred ninety-one thousand, eleven".