30322531021 has 2 divisors, whose sum is σ = 30322531022. Its totient is φ = 30322531020.

The previous prime is 30322531013. The next prime is 30322531033. The reversal of 30322531021 is 12013522303.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30260342025 + 62188996 = 173955^2 + 7886^2 .

It is an emirp because it is prime and its reverse (12013522303) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30322531021 - 2³ = 30322531013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30322530983 and 30322531001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30322531721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15161265510 + 15161265511.

It is an arithmetic number, because the mean of its divisors is an integer number (15161265511).

Almost surely, 2^30322531021 is an apocalyptic number.

It is an amenable number.

30322531021 is a deficient number, since it is larger than the sum of its proper divisors (1).

30322531021 is an equidigital number, since it uses as much as digits as its factorization.

30322531021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 22.

The spelling of 30322531021 in words is "thirty billion, three hundred twenty-two million, five hundred thirty-one thousand, twenty-one".