9030221 has 4 divisors (see below), whose sum is σ = 9038172. Its totient is φ = 9022272.

The previous prime is 9030211. The next prime is 9030239. The reversal of 9030221 is 1220309.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 8934121 + 96100 = 2989^2 + 310^2 .

It is a cyclic number.

It is not a de Polignac number, because 9030221 - 2¹⁰ = 9029197 is a prime.

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 9030221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9030211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1916 + ... + 4661.

It is an arithmetic number, because the mean of its divisors is an integer number (2259543).

Almost surely, 2^9030221 is an apocalyptic number.

It is an amenable number.

9030221 is a deficient number, since it is larger than the sum of its proper divisors (7951).

9030221 is a wasteful number, since it uses less digits than its factorization.

9030221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7950.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 9030221 is about 3005.0326121358. The cubic root of 9030221 is about 208.2409452042.

The spelling of 9030221 in words is "nine million, thirty thousand, two hundred twenty-one".