21301304300 has 72 divisors (see below), whose sum is σ = 49217006160. Its totient is φ = 7974400000.

The previous prime is 21301304291. The next prime is 21301304309. The reversal of 21301304300 is 340310312.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21301304291) and next prime (21301304309).

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (21301304309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 269300 + ... + 339300.

It is an arithmetic number, because the mean of its divisors is an integer number (683569530).

Almost surely, 2^21301304300 is an apocalyptic number.

21301304300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21301304300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24608503080).

21301304300 is an abundant number, since it is smaller than the sum of its proper divisors (27915701860).

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

21301304300 is a wasteful number, since it uses less digits than its factorization.

21301304300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70211 (or 70204 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 21301304300 its reverse (340310312), we get a palindrome (21641614612).

The spelling of 21301304300 in words is "twenty-one billion, three hundred one million, three hundred four thousand, three hundred".