9846207221 has 2 divisors, whose sum is σ = 9846207222. Its totient is φ = 9846207220.

The previous prime is 9846207191. The next prime is 9846207247. The reversal of 9846207221 is 1227026489.

9846207221 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., 7428026596 + 2418180625 = 86186^2 + 49175^2 .

It is a cyclic number.

It is not a de Polignac number, because 9846207221 - 2¹⁸ = 9845945077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9846207251) 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, 4923103610 + 4923103611.

It is an arithmetic number, because the mean of its divisors is an integer number (4923103611).

Almost surely, 2^9846207221 is an apocalyptic number.

It is an amenable number.

9846207221 is a deficient number, since it is larger than the sum of its proper divisors (1).

9846207221 is an equidigital number, since it uses as much as digits as its factorization.

9846207221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 9846207221 is about 99228.0566221066. The cubic root of 9846207221 is about 2143.3330322536. Note that the first 3 decimals are identical.

The spelling of 9846207221 in words is "nine billion, eight hundred forty-six million, two hundred seven thousand, two hundred twenty-one".