9206221 has 2 divisors, whose sum is σ = 9206222. Its totient is φ = 9206220.

The previous prime is 9206213. The next prime is 9206227. The reversal of 9206221 is 1226029.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8970025 + 236196 = 2995^2 + 486^2 .

It is a cyclic number.

It is not a de Polignac number, because 9206221 - 2³ = 9206213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9206192 and 9206201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9206227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4603110 + 4603111.

It is an arithmetic number, because the mean of its divisors is an integer number (4603111).

Almost surely, 2^9206221 is an apocalyptic number.

It is an amenable number.

9206221 is a deficient number, since it is larger than the sum of its proper divisors (1).

9206221 is an equidigital number, since it uses as much as digits as its factorization.

9206221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 9206221 is about 3034.1755058005. The cubic root of 9206221 is about 209.5851295342.

The spelling of 9206221 in words is "nine million, two hundred six thousand, two hundred twenty-one".