3033021221 has 8 divisors (see below), whose sum is σ = 3220191360. Its totient is φ = 2846824128.

The previous prime is 3033021209. The next prime is 3033021227. The reversal of 3033021221 is 1221203303.

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

It is a cyclic number.

It is not a de Polignac number, because 3033021221 - 2¹⁰ = 3033020197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3033021221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3033021227) 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, 236831 + ... + 249308.

It is an arithmetic number, because the mean of its divisors is an integer number (402523920).

Almost surely, 2^3033021221 is an apocalyptic number.

It is an amenable number.

3033021221 is a deficient number, since it is larger than the sum of its proper divisors (187170139).

3033021221 is a wasteful number, since it uses less digits than its factorization.

3033021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486523.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 3033021221 is about 55072.8719153087. The cubic root of 3033021221 is about 1447.5219220661.

Adding to 3033021221 its reverse (1221203303), we get a palindrome (4254224524).

The spelling of 3033021221 in words is "three billion, thirty-three million, twenty-one thousand, two hundred twenty-one".