30332310221 has 2 divisors, whose sum is σ = 30332310222. Its totient is φ = 30332310220.

The previous prime is 30332310193. The next prime is 30332310223. The reversal of 30332310221 is 12201323303.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30019374121 + 312936100 = 173261^2 + 17690^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30332310221 is a prime.

Together with 30332310223, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 30332310193 and 30332310202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30332310223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15166155110 + 15166155111.

It is an arithmetic number, because the mean of its divisors is an integer number (15166155111).

Almost surely, 2^30332310221 is an apocalyptic number.

It is an amenable number.

30332310221 is a deficient number, since it is larger than the sum of its proper divisors (1).

30332310221 is an equidigital number, since it uses as much as digits as its factorization.

30332310221 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.

Adding to 30332310221 its reverse (12201323303), we get a palindrome (42533633524).

The spelling of 30332310221 in words is "thirty billion, three hundred thirty-two million, three hundred ten thousand, two hundred twenty-one".