21000302300 has 36 divisors (see below), whose sum is σ = 48251286720. Its totient is φ = 7905995520.

The previous prime is 21000302251. The next prime is 21000302303. The reversal of 21000302300 is 320300012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21000302303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6174860 + ... + 6178259.

It is an arithmetic number, because the mean of its divisors is an integer number (1340313520).

Almost surely, 2^21000302300 is an apocalyptic number.

21000302300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21000302300 is an abundant number, since it is smaller than the sum of its proper divisors (27250984420).

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

21000302300 is a wasteful number, since it uses less digits than its factorization.

21000302300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12353150 (or 12353143 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 11.

Adding to 21000302300 its reverse (320300012), we get a palindrome (21320602312).

The spelling of 21000302300 in words is "twenty-one billion, three hundred two thousand, three hundred".