9266221 has 2 divisors, whose sum is σ = 9266222. Its totient is φ = 9266220.

The previous prime is 9266219. The next prime is 9266233. The reversal of 9266221 is 1226629.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9030025 + 236196 = 3005^2 + 486^2 .

It is an emirp because it is prime and its reverse (1226629) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9266221 - 2¹ = 9266219 is a prime.

Together with 9266219, it forms a pair of twin primes.

It is a Chen prime.

9266221 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 9266221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9266291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4633110 + 4633111.

It is an arithmetic number, because the mean of its divisors is an integer number (4633111).

Almost surely, 2^9266221 is an apocalyptic number.

It is an amenable number.

9266221 is a deficient number, since it is larger than the sum of its proper divisors (1).

9266221 is an equidigital number, since it uses as much as digits as its factorization.

9266221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 28.

The square root of 9266221 is about 3044.0468130435. The cubic root of 9266221 is about 210.0394559272.

Subtracting from 9266221 its product of digits (2592), we obtain a palindrome (9263629).

The spelling of 9266221 in words is "nine million, two hundred sixty-six thousand, two hundred twenty-one".