21302130300 has 72 divisors (see below), whose sum is σ = 67237279872. Its totient is φ = 5164152000.

The previous prime is 21302130299. The next prime is 21302130349. The reversal of 21302130300 is 303120312.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 21302130300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3224296 + ... + 3230895.

Almost surely, 2^21302130300 is an apocalyptic number.

21302130300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21302130300 is an abundant number, since it is smaller than the sum of its proper divisors (45935149572).

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

21302130300 is a wasteful number, since it uses less digits than its factorization.

21302130300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6455219 (or 6455212 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 21302130300 its reverse (303120312), we get a palindrome (21605250612).

The spelling of 21302130300 in words is "twenty-one billion, three hundred two million, one hundred thirty thousand, three hundred".