30336221 has 2 divisors, whose sum is σ = 30336222. Its totient is φ = 30336220.

The previous prime is 30336203. The next prime is 30336239. The reversal of 30336221 is 12263303.

It is a balanced prime because it is at equal distance from previous prime (30336203) and next prime (30336239).

It can be written as a sum of positive squares in only one way, i.e., 18156121 + 12180100 = 4261^2 + 3490^2 .

It is a cyclic number.

It is not a de Polignac number, because 30336221 - 2¹⁰ = 30335197 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 30336193 and 30336202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30332221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15168110 + 15168111.

It is an arithmetic number, because the mean of its divisors is an integer number (15168111).

Almost surely, 2^30336221 is an apocalyptic number.

It is an amenable number.

30336221 is a deficient number, since it is larger than the sum of its proper divisors (1).

30336221 is an equidigital number, since it uses as much as digits as its factorization.

30336221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 30336221 is about 5507.8326953530. The cubic root of 30336221 is about 311.8797373722.

Adding to 30336221 its reverse (12263303), we get a palindrome (42599524).

The spelling of 30336221 in words is "thirty million, three hundred thirty-six thousand, two hundred twenty-one".