8232221 has 4 divisors (see below), whose sum is σ = 8423712. Its totient is φ = 8040732.

The previous prime is 8232197. The next prime is 8232227. The reversal of 8232221 is 1222328.

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 a de Polignac number, because none of the positive numbers 2^k-8232221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 8232193 and 8232202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8232227) 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, 95681 + ... + 95766.

It is an arithmetic number, because the mean of its divisors is an integer number (2105928).

Almost surely, 2^8232221 is an apocalyptic number.

It is an amenable number.

8232221 is a deficient number, since it is larger than the sum of its proper divisors (191491).

8232221 is a wasteful number, since it uses less digits than its factorization.

8232221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191490.

The product of its digits is 384, while the sum is 20.

The square root of 8232221 is about 2869.1847274095. The cubic root of 8232221 is about 201.9167467268.

Adding to 8232221 its reverse (1222328), we get a palindrome (9454549).

The spelling of 8232221 in words is "eight million, two hundred thirty-two thousand, two hundred twenty-one".