30032300021 has 2 divisors, whose sum is σ = 30032300022. Its totient is φ = 30032300020.

The previous prime is 30032300009. The next prime is 30032300047. The reversal of 30032300021 is 12000323003.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28523832100 + 1508467921 = 168890^2 + 38839^2 .

It is a cyclic number.

It is not a de Polignac number, because 30032300021 - 2¹⁰ = 30032298997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30032299969 and 30032300005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30032300321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15016150010 + 15016150011.

It is an arithmetic number, because the mean of its divisors is an integer number (15016150011).

Almost surely, 2^30032300021 is an apocalyptic number.

It is an amenable number.

30032300021 is a deficient number, since it is larger than the sum of its proper divisors (1).

30032300021 is an equidigital number, since it uses as much as digits as its factorization.

30032300021 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 14.

Adding to 30032300021 its reverse (12000323003), we get a palindrome (42032623024).

The spelling of 30032300021 in words is "thirty billion, thirty-two million, three hundred thousand, twenty-one".