2110209109 has 2 divisors, whose sum is σ = 2110209110. Its totient is φ = 2110209108.

The previous prime is 2110209089. The next prime is 2110209119. The reversal of 2110209109 is 9019020112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1850290225 + 259918884 = 43015^2 + 16122^2 .

It is a cyclic number.

It is not a de Polignac number, because 2110209109 - 2²⁵ = 2076654677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2110209119) 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, 1055104554 + 1055104555.

It is an arithmetic number, because the mean of its divisors is an integer number (1055104555).

Almost surely, 2^2110209109 is an apocalyptic number.

It is an amenable number.

2110209109 is a deficient number, since it is larger than the sum of its proper divisors (1).

2110209109 is an equidigital number, since it uses as much as digits as its factorization.

2110209109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 25.

The square root of 2110209109 is about 45937.0124082966. The cubic root of 2110209109 is about 1282.6509814436.

The spelling of 2110209109 in words is "two billion, one hundred ten million, two hundred nine thousand, one hundred nine".