300000000021 has 8 divisors (see below), whose sum is σ = 401133145920. Its totient is φ = 199433427072.

The previous prime is 299999999989. The next prime is 300000000077. The reversal of 300000000021 is 120000000003.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 300000000021 - 2⁵ = 299999999989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 299999999928 and 300000000009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (300000000121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141642001 + ... + 141644118.

It is an arithmetic number, because the mean of its divisors is an integer number (50141643240).

Almost surely, 2^300000000021 is an apocalyptic number.

It is an amenable number.

300000000021 is a deficient number, since it is larger than the sum of its proper divisors (101133145899).

300000000021 is a wasteful number, since it uses less digits than its factorization.

300000000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283286475.

The product of its (nonzero) digits is 6, while the sum is 6.

Adding to 300000000021 its reverse (120000000003), we get a palindrome (420000000024).

It can be divided in two parts, 30000000002 and 1, that added together give a palindrome (30000000003).

The spelling of 300000000021 in words is "three hundred billion, twenty-one", and thus it is an aban number.