30303029021 has 2 divisors, whose sum is σ = 30303029022. Its totient is φ = 30303029020.

The previous prime is 30303029011. The next prime is 30303029027. The reversal of 30303029021 is 12092030303.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25852137796 + 4450891225 = 160786^2 + 66715^2 .

It is a cyclic number.

It is not a de Polignac number, because 30303029021 - 2¹⁴ = 30303012637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30303029027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15151514510 + 15151514511.

It is an arithmetic number, because the mean of its divisors is an integer number (15151514511).

Almost surely, 2^30303029021 is an apocalyptic number.

It is an amenable number.

30303029021 is a deficient number, since it is larger than the sum of its proper divisors (1).

30303029021 is an equidigital number, since it uses as much as digits as its factorization.

30303029021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 30303029021 its reverse (12092030303), we get a palindrome (42395059324).

The spelling of 30303029021 in words is "thirty billion, three hundred three million, twenty-nine thousand, twenty-one".