9221224 has 8 divisors (see below), whose sum is σ = 17289810. Its totient is φ = 4610608.

The previous prime is 9221207. The next prime is 9221227. The reversal of 9221224 is 4221229.

It can be written as a sum of positive squares in only one way, i.e., 6916900 + 2304324 = 2630^2 + 1518^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 9221195 and 9221204.

It is not an unprimeable number, because it can be changed into a prime (9221227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 576319 + ... + 576334.

Almost surely, 2^9221224 is an apocalyptic number.

It is an amenable number.

9221224 is a deficient number, since it is larger than the sum of its proper divisors (8068586).

9221224 is a wasteful number, since it uses less digits than its factorization.

9221224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1152659 (or 1152655 counting only the distinct ones).

The product of its digits is 576, while the sum is 22.

The square root of 9221224 is about 3036.6468349151. The cubic root of 9221224 is about 209.6989185015.

It can be divided in two parts, 92 and 21224, that added together give a square (21316 = 146²).

The spelling of 9221224 in words is "nine million, two hundred twenty-one thousand, two hundred twenty-four".