111101111111803 has 2 divisors, whose sum is σ = 111101111111804. Its totient is φ = 111101111111802.

The previous prime is 111101111111773. The next prime is 111101111112133. The reversal of 111101111111803 is 308111111101111.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111101111111803 is a prime.

It is not a weakly prime, because it can be changed into another prime (111101111111303) 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, 55550555555901 + 55550555555902.

It is an arithmetic number, because the mean of its divisors is an integer number (55550555555902).

Almost surely, 2^{111101111111803} is an apocalyptic number.

111101111111803 is a deficient number, since it is larger than the sum of its proper divisors (1).

111101111111803 is an equidigital number, since it uses as much as digits as its factorization.

111101111111803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 22.

Adding to 111101111111803 its reverse (308111111101111), we get a palindrome (419212222212914).

The spelling of 111101111111803 in words is "one hundred eleven trillion, one hundred one billion, one hundred eleven million, one hundred eleven thousand, eight hundred three".