8362221209 has 2 divisors, whose sum is σ = 8362221210. Its totient is φ = 8362221208.

The previous prime is 8362221193. The next prime is 8362221211. The reversal of 8362221209 is 9021222638.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7860595600 + 501625609 = 88660^2 + 22397^2 .

It is a cyclic number.

It is not a de Polignac number, because 8362221209 - 2⁴ = 8362221193 is a prime.

Together with 8362221211, 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 (8362221229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4181110604 + 4181110605.

It is an arithmetic number, because the mean of its divisors is an integer number (4181110605).

Almost surely, 2^8362221209 is an apocalyptic number.

It is an amenable number.

8362221209 is a deficient number, since it is larger than the sum of its proper divisors (1).

8362221209 is an equidigital number, since it uses as much as digits as its factorization.

8362221209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 8362221209 is about 91445.1814422171. The cubic root of 8362221209 is about 2029.7406553104.

The spelling of 8362221209 in words is "eight billion, three hundred sixty-two million, two hundred twenty-one thousand, two hundred nine".