10303221 has 4 divisors (see below), whose sum is σ = 13737632. Its totient is φ = 6868812.

The previous prime is 10303217. The next prime is 10303247. The reversal of 10303221 is 12230301.

It is a happy number.

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 not a de Polignac number, because 10303221 - 2² = 10303217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10303197 and 10303206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10303211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1717201 + ... + 1717206.

It is an arithmetic number, because the mean of its divisors is an integer number (3434408).

Almost surely, 2^10303221 is an apocalyptic number.

It is an amenable number.

10303221 is a deficient number, since it is larger than the sum of its proper divisors (3434411).

10303221 is an equidigital number, since it uses as much as digits as its factorization.

10303221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3434410.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 10303221 is about 3209.8630811921. The cubic root of 10303221 is about 217.5993891117.

Adding to 10303221 its reverse (12230301), we get a palindrome (22533522).

The spelling of 10303221 in words is "ten million, three hundred three thousand, two hundred twenty-one".