10320221 has 8 divisors (see below), whose sum is σ = 10557600. Its totient is φ = 10085040.

The previous prime is 10320209. The next prime is 10320223. The reversal of 10320221 is 12202301.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10320221 - 2⁶ = 10320157 is a prime.

It is a super-2 number, since 2×10320221² = 213013922977682, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10320223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12035 + ... + 12863.

It is an arithmetic number, because the mean of its divisors is an integer number (1319700).

Almost surely, 2^10320221 is an apocalyptic number.

It is an amenable number.

10320221 is a deficient number, since it is larger than the sum of its proper divisors (237379).

10320221 is an equidigital number, since it uses as much as digits as its factorization.

10320221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1099.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 10320221 is about 3212.5100778052. The cubic root of 10320221 is about 217.7190007995.

Adding to 10320221 its reverse (12202301), we get a palindrome (22522522).

The spelling of 10320221 in words is "ten million, three hundred twenty thousand, two hundred twenty-one".