2212323809 has 2 divisors, whose sum is σ = 2212323810. Its totient is φ = 2212323808.

The previous prime is 2212323791. The next prime is 2212323811. The reversal of 2212323809 is 9083232122.

2212323809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1560645025 + 651678784 = 39505^2 + 25528^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2212323809 is a prime.

Together with 2212323811, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2212323859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1106161904 + 1106161905.

It is an arithmetic number, because the mean of its divisors is an integer number (1106161905).

Almost surely, 2^2212323809 is an apocalyptic number.

It is an amenable number.

2212323809 is a deficient number, since it is larger than the sum of its proper divisors (1).

2212323809 is an equidigital number, since it uses as much as digits as its factorization.

2212323809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 2212323809 is about 47035.3463790796. The cubic root of 2212323809 is about 1303.0154475694.

The spelling of 2212323809 in words is "two billion, two hundred twelve million, three hundred twenty-three thousand, eight hundred nine".