30303320221 has 2 divisors, whose sum is σ = 30303320222. Its totient is φ = 30303320220.

The previous prime is 30303320219. The next prime is 30303320239. The reversal of 30303320221 is 12202330303.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24158484900 + 6144835321 = 155430^2 + 78389^2 .

It is a cyclic number.

It is not a de Polignac number, because 30303320221 - 2¹ = 30303320219 is a prime.

Together with 30303320219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30303320251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15151660110 + 15151660111.

It is an arithmetic number, because the mean of its divisors is an integer number (15151660111).

Almost surely, 2^30303320221 is an apocalyptic number.

It is an amenable number.

30303320221 is a deficient number, since it is larger than the sum of its proper divisors (1).

30303320221 is an equidigital number, since it uses as much as digits as its factorization.

30303320221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 30303320221 its reverse (12202330303), we get a palindrome (42505650524).

The spelling of 30303320221 in words is "thirty billion, three hundred three million, three hundred twenty thousand, two hundred twenty-one".