21000300304 has 40 divisors (see below), whose sum is σ = 40804075872. Its totient is φ = 10470270720.

The previous prime is 21000300301. The next prime is 21000300313. The reversal of 21000300304 is 40300300012.

It is a super-2 number, since 2×21000300304² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21000300301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14159947 + ... + 14161429.

Almost surely, 2^21000300304 is an apocalyptic number.

It is an amenable number.

21000300304 is a deficient number, since it is larger than the sum of its proper divisors (19803775568).

21000300304 is a wasteful number, since it uses less digits than its factorization.

21000300304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3415 (or 3409 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 21000300304 its reverse (40300300012), we get a palindrome (61300600316).

The spelling of 21000300304 in words is "twenty-one billion, three hundred thousand, three hundred four".