30003043021 has 4 divisors (see below), whose sum is σ = 34289192032. Its totient is φ = 25716894012.

The previous prime is 30003043019. The next prime is 30003043033. The reversal of 30003043021 is 12034030003.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12034030003 = 6397 ⋅1881199.

It is a cyclic number.

It is not a de Polignac number, because 30003043021 - 2¹ = 30003043019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30003042986 and 30003043004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30003043921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2143074495 + ... + 2143074508.

It is an arithmetic number, because the mean of its divisors is an integer number (8572298008).

Almost surely, 2^30003043021 is an apocalyptic number.

It is an amenable number.

30003043021 is a deficient number, since it is larger than the sum of its proper divisors (4286149011).

30003043021 is an equidigital number, since it uses as much as digits as its factorization.

30003043021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4286149010.

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 30003043021 its reverse (12034030003), we get a palindrome (42037073024).

The spelling of 30003043021 in words is "thirty billion, three million, forty-three thousand, twenty-one".