21304120300 has 36 divisors (see below), whose sum is σ = 48239943696. Its totient is φ = 8151140800.

The previous prime is 21304120289. The next prime is 21304120303. The reversal of 21304120300 is 302140312.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21304120303) 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, 4629031 + ... + 4633630.

It is an arithmetic number, because the mean of its divisors is an integer number (1339998436).

Almost surely, 2^21304120300 is an apocalyptic number.

21304120300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21304120300 is an abundant number, since it is smaller than the sum of its proper divisors (26935823396).

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

21304120300 is a wasteful number, since it uses less digits than its factorization.

21304120300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9262698 (or 9262691 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 21304120300 its reverse (302140312), we get a palindrome (21606260612).

The spelling of 21304120300 in words is "twenty-one billion, three hundred four million, one hundred twenty thousand, three hundred".