33021223 has 8 divisors (see below), whose sum is σ = 33446160. Its totient is φ = 32598720.

The previous prime is 33021217. The next prime is 33021239. The reversal of 33021223 is 32212033.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33021223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33021197 and 33021206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33021253) 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, 53211 + ... + 53827.

It is an arithmetic number, because the mean of its divisors is an integer number (4180770).

Almost surely, 2^33021223 is an apocalyptic number.

33021223 is a deficient number, since it is larger than the sum of its proper divisors (424937).

33021223 is a wasteful number, since it uses less digits than its factorization.

33021223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1217.

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

The square root of 33021223 is about 5746.4095746823. The cubic root of 33021223 is about 320.8221793765.

Adding to 33021223 its reverse (32212033), we get a palindrome (65233256).

The spelling of 33021223 in words is "thirty-three million, twenty-one thousand, two hundred twenty-three".