9221321 has 4 divisors (see below), whose sum is σ = 9622272. Its totient is φ = 8820372.

The previous prime is 9221297. The next prime is 9221341. The reversal of 9221321 is 1231229.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9221321 - 2⁶ = 9221257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9221293 and 9221302.

It is not an unprimeable number, because it can be changed into a prime (9221341) 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 in 3 ways as a sum of consecutive naturals, for example, 200441 + ... + 200486.

It is an arithmetic number, because the mean of its divisors is an integer number (2405568).

Almost surely, 2^9221321 is an apocalyptic number.

It is an amenable number.

9221321 is a deficient number, since it is larger than the sum of its proper divisors (400951).

9221321 is a wasteful number, since it uses less digits than its factorization.

9221321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400950.

The product of its digits is 216, while the sum is 20.

The square root of 9221321 is about 3036.6628064374. The cubic root of 9221321 is about 209.6996537880.

The spelling of 9221321 in words is "nine million, two hundred twenty-one thousand, three hundred twenty-one".