21300304000 has 64 divisors (see below), whose sum is σ = 52957920600. Its totient is φ = 8520115200.

The previous prime is 21300303977. The next prime is 21300304009. The reversal of 21300304000 is 40300312.

It can be written as a sum of positive squares in 4 ways, for example, as 2561979456 + 18738324544 = 50616^2 + 136888^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (21300304009) 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, 649635 + ... + 681634.

Almost surely, 2^21300304000 is an apocalyptic number.

21300304000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21300304000 is an abundant number, since it is smaller than the sum of its proper divisors (31657616600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21300304000 is an equidigital number, since it uses as much as digits as its factorization.

21300304000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1331298 (or 1331276 counting only the distinct ones).

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

Adding to 21300304000 its reverse (40300312), we get a palindrome (21340604312).

The spelling of 21300304000 in words is "twenty-one billion, three hundred million, three hundred four thousand".