33230221 has 4 divisors (see below), whose sum is σ = 34979200. Its totient is φ = 31481244.

The previous prime is 33230167. The next prime is 33230237. The reversal of 33230221 is 12203233.

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 33230221 - 2⁹ = 33229709 is a prime.

It is a super-2 number, since 2×33230221² = 2208495175417682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33230195 and 33230204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33230261) 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, 874461 + ... + 874498.

It is an arithmetic number, because the mean of its divisors is an integer number (8744800).

Almost surely, 2^33230221 is an apocalyptic number.

It is an amenable number.

33230221 is a deficient number, since it is larger than the sum of its proper divisors (1748979).

33230221 is a wasteful number, since it uses less digits than its factorization.

33230221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1748978.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 33230221 is about 5764.5659853973. The cubic root of 33230221 is about 321.4976058941.

Adding to 33230221 its reverse (12203233), we get a palindrome (45433454).

The spelling of 33230221 in words is "thirty-three million, two hundred thirty thousand, two hundred twenty-one".