111022100111789 has 2 divisors, whose sum is σ = 111022100111790. Its totient is φ = 111022100111788.

The previous prime is 111022100111761. The next prime is 111022100111807. The reversal of 111022100111789 is 987111001220111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88600615584100 + 22421484527689 = 9412790^2 + 4735133^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111022100111789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111022100111759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55511050055894 + 55511050055895.

It is an arithmetic number, because the mean of its divisors is an integer number (55511050055895).

Almost surely, 2^{111022100111789} is an apocalyptic number.

It is an amenable number.

111022100111789 is a deficient number, since it is larger than the sum of its proper divisors (1).

111022100111789 is an equidigital number, since it uses as much as digits as its factorization.

111022100111789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 35.

The spelling of 111022100111789 in words is "one hundred eleven trillion, twenty-two billion, one hundred million, one hundred eleven thousand, seven hundred eighty-nine".