30113320021 has 2 divisors, whose sum is σ = 30113320022. Its totient is φ = 30113320020.

The previous prime is 30113320007. The next prime is 30113320049. The reversal of 30113320021 is 12002331103.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29482607025 + 630712996 = 171705^2 + 25114^2 .

It is a cyclic number.

It is not a de Polignac number, because 30113320021 - 2¹¹ = 30113317973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30113319977 and 30113320004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30113326021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15056660010 + 15056660011.

It is an arithmetic number, because the mean of its divisors is an integer number (15056660011).

Almost surely, 2^30113320021 is an apocalyptic number.

It is an amenable number.

30113320021 is a deficient number, since it is larger than the sum of its proper divisors (1).

30113320021 is an equidigital number, since it uses as much as digits as its factorization.

30113320021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 30113320021 its reverse (12002331103), we get a palindrome (42115651124).

The spelling of 30113320021 in words is "thirty billion, one hundred thirteen million, three hundred twenty thousand, twenty-one".