33022221 has 8 divisors (see below), whose sum is σ = 44091264. Its totient is φ = 21984000.

The previous prime is 33022217. The next prime is 33022229. The reversal of 33022221 is 12222033.

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

It is not a de Polignac number, because 33022221 - 2² = 33022217 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 33022221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33022229) 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, 5076 + ... + 9581.

It is an arithmetic number, because the mean of its divisors is an integer number (5511408).

Almost surely, 2^33022221 is an apocalyptic number.

It is an amenable number.

33022221 is a deficient number, since it is larger than the sum of its proper divisors (11069043).

33022221 is a wasteful number, since it uses less digits than its factorization.

33022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15411.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 33022221 is about 5746.4964108577. The cubic root of 33022221 is about 320.8254114121.

Adding to 33022221 its reverse (12222033), we get a palindrome (45244254).

The spelling of 33022221 in words is "thirty-three million, twenty-two thousand, two hundred twenty-one".