21013347300 has 72 divisors (see below), whose sum is σ = 66325775712. Its totient is φ = 5094144000.

The previous prime is 21013347203. The next prime is 21013347349. The reversal of 21013347300 is 374331012.

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, 3180541 + ... + 3187140.

Almost surely, 2^21013347300 is an apocalyptic number.

21013347300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21013347300 is an abundant number, since it is smaller than the sum of its proper divisors (45312428412).

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

21013347300 is a wasteful number, since it uses less digits than its factorization.

21013347300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6367709 (or 6367702 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 24.

Adding to 21013347300 its reverse (374331012), we get a palindrome (21387678312).

The spelling of 21013347300 in words is "twenty-one billion, thirteen million, three hundred forty-seven thousand, three hundred".