30004144021 has 4 divisors (see below), whose sum is σ = 30642530112. Its totient is φ = 29365757932.

The previous prime is 30004143997. The next prime is 30004144039. The reversal of 30004144021 is 12044140003.

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.

It is a cyclic number.

It is not a de Polignac number, because 30004144021 - 2²⁵ = 29970589589 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30004144021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30004144921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 319192975 + ... + 319193068.

It is an arithmetic number, because the mean of its divisors is an integer number (7660632528).

Almost surely, 2^30004144021 is an apocalyptic number.

It is an amenable number.

30004144021 is a deficient number, since it is larger than the sum of its proper divisors (638386091).

30004144021 is an equidigital number, since it uses as much as digits as its factorization.

30004144021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638386090.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 30004144021 its reverse (12044140003), we get a palindrome (42048284024).

The spelling of 30004144021 in words is "thirty billion, four million, one hundred forty-four thousand, twenty-one".