8221206495907 has 2 divisors, whose sum is σ = 8221206495908. Its totient is φ = 8221206495906.

The previous prime is 8221206495881. The next prime is 8221206495917. The reversal of 8221206495907 is 7095946021228.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8221206495907 - 2¹⁹ = 8221205971619 is a prime.

It is not a weakly prime, because it can be changed into another prime (8221206495917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4110603247953 + 4110603247954.

It is an arithmetic number, because the mean of its divisors is an integer number (4110603247954).

Almost surely, 2^{8221206495907} is an apocalyptic number.

8221206495907 is a deficient number, since it is larger than the sum of its proper divisors (1).

8221206495907 is an equidigital number, since it uses as much as digits as its factorization.

8221206495907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4354560, while the sum is 55.

The spelling of 8221206495907 in words is "eight trillion, two hundred twenty-one billion, two hundred six million, four hundred ninety-five thousand, nine hundred seven".