30221330221 has 2 divisors, whose sum is σ = 30221330222. Its totient is φ = 30221330220.

The previous prime is 30221330207. The next prime is 30221330257. The reversal of 30221330221 is 12203312203.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19324058121 + 10897272100 = 139011^2 + 104390^2 .

It is a cyclic number.

It is not a de Polignac number, because 30221330221 - 2⁷ = 30221330093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30221330021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15110665110 + 15110665111.

It is an arithmetic number, because the mean of its divisors is an integer number (15110665111).

Almost surely, 2^30221330221 is an apocalyptic number.

It is an amenable number.

30221330221 is a deficient number, since it is larger than the sum of its proper divisors (1).

30221330221 is an equidigital number, since it uses as much as digits as its factorization.

30221330221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 30221330221 its reverse (12203312203), we get a palindrome (42424642424).

The spelling of 30221330221 in words is "thirty billion, two hundred twenty-one million, three hundred thirty thousand, two hundred twenty-one".