1111001001109 has 2 divisors, whose sum is σ = 1111001001110. Its totient is φ = 1111001001108.

The previous prime is 1111001001107. The next prime is 1111001001151. The reversal of 1111001001109 is 9011001001111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 952400328100 + 158600673009 = 975910^2 + 398247^2 .

It is an emirp because it is prime and its reverse (9011001001111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1111001001109 - 2¹ = 1111001001107 is a prime.

Together with 1111001001107, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1111001001092 and 1111001001101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111001001107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555500500554 + 555500500555.

It is an arithmetic number, because the mean of its divisors is an integer number (555500500555).

Almost surely, 2^{1111001001109} is an apocalyptic number.

It is an amenable number.

1111001001109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111001001109 is an equidigital number, since it uses as much as digits as its factorization.

1111001001109 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 1111001001109 in words is "one trillion, one hundred eleven billion, one million, one thousand, one hundred nine".