21300000200320 has 64 divisors (see below), whose sum is σ = 50933233117440. Its totient is φ = 8517838279680.

The previous prime is 21300000200239. The next prime is 21300000200377. The reversal of 21300000200320 is 2300200000312.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21300000200320.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1696776 + ... + 6743815.

It is an arithmetic number, because the mean of its divisors is an integer number (795831767460).

Almost surely, 2^{21300000200320} is an apocalyptic number.

21300000200320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21300000200320 is an abundant number, since it is smaller than the sum of its proper divisors (29633232917120).

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

21300000200320 is an equidigital number, since it uses as much as digits as its factorization.

21300000200320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8444553 (or 8444541 counting only the distinct ones).

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

Adding to 21300000200320 its reverse (2300200000312), we get a palindrome (23600200200632).

The spelling of 21300000200320 in words is "twenty-one trillion, three hundred billion, two hundred thousand, three hundred twenty".