1110111109 has 2 divisors, whose sum is σ = 1110111110. Its totient is φ = 1110111108.

The previous prime is 1110111089. The next prime is 1110111173. The reversal of 1110111109 is 9011110111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1103236225 + 6874884 = 33215^2 + 2622^2 .

It is an emirp because it is prime and its reverse (9011110111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1110111109 - 2⁹ = 1110110597 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1110111092 and 1110111101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1110111809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555055554 + 555055555.

It is an arithmetic number, because the mean of its divisors is an integer number (555055555).

Almost surely, 2^1110111109 is an apocalyptic number.

It is an amenable number.

1110111109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1110111109 is an equidigital number, since it uses as much as digits as its factorization.

1110111109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9, while the sum is 16.

The square root of 1110111109 is about 33318.3299251328. The cubic root of 1110111109 is about 1035.4333514807.

The spelling of 1110111109 in words is "one billion, one hundred ten million, one hundred eleven thousand, one hundred nine".