111111011011003 has 2 divisors, whose sum is σ = 111111011011004. Its totient is φ = 111111011011002.

The previous prime is 111111011010983. The next prime is 111111011011027. The reversal of 111111011011003 is 300110110111111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111111011011003 is a prime.

It is not a weakly prime, because it can be changed into another prime (111111011011073) 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, 55555505505501 + 55555505505502.

It is an arithmetic number, because the mean of its divisors is an integer number (55555505505502).

Almost surely, 2^{111111011011003} is an apocalyptic number.

111111011011003 is a deficient number, since it is larger than the sum of its proper divisors (1).

111111011011003 is an equidigital number, since it uses as much as digits as its factorization.

111111011011003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3, while the sum is 13.

Adding to 111111011011003 its reverse (300110110111111), we get a palindrome (411221121122114).

The spelling of 111111011011003 in words is "one hundred eleven trillion, one hundred eleven billion, eleven million, eleven thousand, three".