30232021021 has 2 divisors, whose sum is σ = 30232021022. Its totient is φ = 30232021020.

The previous prime is 30232020991. The next prime is 30232021063. The reversal of 30232021021 is 12012023203.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29637344025 + 594676996 = 172155^2 + 24386^2 .

It is a cyclic number.

It is not a de Polignac number, because 30232021021 - 2⁵ = 30232020989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30232020986 and 30232021004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30232021321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15116010510 + 15116010511.

It is an arithmetic number, because the mean of its divisors is an integer number (15116010511).

Almost surely, 2^30232021021 is an apocalyptic number.

It is an amenable number.

30232021021 is a deficient number, since it is larger than the sum of its proper divisors (1).

30232021021 is an equidigital number, since it uses as much as digits as its factorization.

30232021021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 30232021021 its reverse (12012023203), we get a palindrome (42244044224).

The spelling of 30232021021 in words is "thirty billion, two hundred thirty-two million, twenty-one thousand, twenty-one".