33002221 has 8 divisors (see below), whose sum is σ = 39702080. Its totient is φ = 26798688.

The previous prime is 33002201. The next prime is 33002227. The reversal of 33002221 is 12220033.

It is a happy number.

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

It is not a de Polignac number, because 33002221 - 2²³ = 24613613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33002227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123936 + ... + 124201.

It is an arithmetic number, because the mean of its divisors is an integer number (4962760).

Almost surely, 2^33002221 is an apocalyptic number.

It is an amenable number.

33002221 is a deficient number, since it is larger than the sum of its proper divisors (6699859).

33002221 is a wasteful number, since it uses less digits than its factorization.

33002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248163.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 33002221 is about 5744.7559565224. The cubic root of 33002221 is about 320.7606287308.

Adding to 33002221 its reverse (12220033), we get a palindrome (45222254).

The spelling of 33002221 in words is "thirty-three million, two thousand, two hundred twenty-one".