2111102209 has 2 divisors, whose sum is σ = 2111102210. Its totient is φ = 2111102208.

The previous prime is 2111102197. The next prime is 2111102221. The reversal of 2111102209 is 9022011112.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (2111102197) and next prime (2111102221).

It can be written as a sum of positive squares in only one way, i.e., 1654211584 + 456890625 = 40672^2 + 21375^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2111102209 is a prime.

It is not a weakly prime, because it can be changed into another prime (2111102249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055551104 + 1055551105.

It is an arithmetic number, because the mean of its divisors is an integer number (1055551105).

Almost surely, 2^2111102209 is an apocalyptic number.

It is an amenable number.

2111102209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111102209 is an equidigital number, since it uses as much as digits as its factorization.

2111102209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 2111102209 is about 45946.7322994791. The cubic root of 2111102209 is about 1282.8319072765.

The spelling of 2111102209 in words is "two billion, one hundred eleven million, one hundred two thousand, two hundred nine".