8022222209 has 2 divisors, whose sum is σ = 8022222210. Its totient is φ = 8022222208.

The previous prime is 8022222167. The next prime is 8022222283. The reversal of 8022222209 is 9022222208.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5912841025 + 2109381184 = 76895^2 + 45928^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8022222209 is a prime.

It is not a weakly prime, because it can be changed into another prime (8022222289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4011111104 + 4011111105.

It is an arithmetic number, because the mean of its divisors is an integer number (4011111105).

Almost surely, 2^8022222209 is an apocalyptic number.

It is an amenable number.

8022222209 is a deficient number, since it is larger than the sum of its proper divisors (1).

8022222209 is an equidigital number, since it uses as much as digits as its factorization.

8022222209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 8022222209 is about 89566.8588764840. The cubic root of 8022222209 is about 2001.8501387156.

Subtracting 8022222209 from its reverse (9022222208), we obtain a palindrome (999999999).

The spelling of 8022222209 in words is "eight billion, twenty-two million, two hundred twenty-two thousand, two hundred nine".