30001033021 has 2 divisors, whose sum is σ = 30001033022. Its totient is φ = 30001033020.

The previous prime is 30001033001. The next prime is 30001033061. The reversal of 30001033021 is 12033010003.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29451364996 + 549668025 = 171614^2 + 23445^2 .

It is a cyclic number.

It is not a de Polignac number, because 30001033021 - 2²³ = 29992644413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30001032992 and 30001033010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30001033001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15000516510 + 15000516511.

It is an arithmetic number, because the mean of its divisors is an integer number (15000516511).

Almost surely, 2^30001033021 is an apocalyptic number.

It is an amenable number.

30001033021 is a deficient number, since it is larger than the sum of its proper divisors (1).

30001033021 is an equidigital number, since it uses as much as digits as its factorization.

30001033021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 13.

Adding to 30001033021 its reverse (12033010003), we get a palindrome (42034043024).

The spelling of 30001033021 in words is "thirty billion, one million, thirty-three thousand, twenty-one".