2011011109 has 2 divisors, whose sum is σ = 2011011110. Its totient is φ = 2011011108.

The previous prime is 2011011077. The next prime is 2011011133. The reversal of 2011011109 is 9011101102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1924576900 + 86434209 = 43870^2 + 9297^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011011109 - 2⁵ = 2011011077 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2011011092 and 2011011101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2011011169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005505554 + 1005505555.

It is an arithmetic number, because the mean of its divisors is an integer number (1005505555).

Almost surely, 2^2011011109 is an apocalyptic number.

It is an amenable number.

2011011109 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011011109 is an equidigital number, since it uses as much as digits as its factorization.

2011011109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 16.

The square root of 2011011109 is about 44844.2985116280. The cubic root of 2011011109 is about 1262.2290075357.

The spelling of 2011011109 in words is "two billion, eleven million, eleven thousand, one hundred nine".