111100211019943 has 2 divisors, whose sum is σ = 111100211019944. Its totient is φ = 111100211019942.

The previous prime is 111100211019923. The next prime is 111100211020003. The reversal of 111100211019943 is 349910112001111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111100211019943 - 2⁹ = 111100211019431 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111100211019899 and 111100211019908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111100211019923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55550105509971 + 55550105509972.

It is an arithmetic number, because the mean of its divisors is an integer number (55550105509972).

Almost surely, 2^{111100211019943} is an apocalyptic number.

111100211019943 is a deficient number, since it is larger than the sum of its proper divisors (1).

111100211019943 is an equidigital number, since it uses as much as digits as its factorization.

111100211019943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 34.

The spelling of 111100211019943 in words is "one hundred eleven trillion, one hundred billion, two hundred eleven million, nineteen thousand, nine hundred forty-three".