1111100000009 has 2 divisors, whose sum is σ = 1111100000010. Its totient is φ = 1111100000008.

The previous prime is 1111099999967. The next prime is 1111100000029. The reversal of 1111100000009 is 9000000011111.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1091717791609 + 19382208400 = 1044853^2 + 139220^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111100000009 - 2²⁴ = 1111083222793 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1111099999939 and 1111100000002.

It is not a weakly prime, because it can be changed into another prime (1111100000029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555550000004 + 555550000005.

It is an arithmetic number, because the mean of its divisors is an integer number (555550000005).

Almost surely, 2^{1111100000009} is an apocalyptic number.

It is an amenable number.

1111100000009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111100000009 is an equidigital number, since it uses as much as digits as its factorization.

1111100000009 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 14.

The spelling of 1111100000009 in words is "one trillion, one hundred eleven billion, one hundred million, nine", and thus it is an aban number.