30003221 has 4 divisors (see below), whose sum is σ = 30078444. Its totient is φ = 29928000.

The previous prime is 30003209. The next prime is 30003227. The reversal of 30003221 is 12230003.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23902321 + 6100900 = 4889^2 + 2470^2 .

It is a cyclic number.

It is not a de Polignac number, because 30003221 - 2⁶ = 30003157 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 (30003227) 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, 37010 + ... + 37811.

It is an arithmetic number, because the mean of its divisors is an integer number (7519611).

Almost surely, 2^30003221 is an apocalyptic number.

It is an amenable number.

30003221 is a deficient number, since it is larger than the sum of its proper divisors (75223).

30003221 is an equidigital number, since it uses as much as digits as its factorization.

30003221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75222.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 30003221 is about 5477.5196028860. The cubic root of 30003221 is about 310.7343706373.

Adding to 30003221 its reverse (12230003), we get a palindrome (42233224).

The spelling of 30003221 in words is "thirty million, three thousand, two hundred twenty-one".