21043403130300 has 144 divisors (see below), whose sum is σ = 63098176145760. Its totient is φ = 5408343127040.

The previous prime is 21043403130247. The next prime is 21043403130301. The reversal of 21043403130300 is 303130434012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21043403130301) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2674642 + ... + 7017158.

It is an arithmetic number, because the mean of its divisors is an integer number (438181778790).

Almost surely, 2^{21043403130300} is an apocalyptic number.

21043403130300 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 21043403130300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31549088072880).

21043403130300 is an abundant number, since it is smaller than the sum of its proper divisors (42054773015460).

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

21043403130300 is a wasteful number, since it uses less digits than its factorization.

21043403130300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4343120 (or 4343113 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 21043403130300 its reverse (303130434012), we get a palindrome (21346533564312).

The spelling of 21043403130300 in words is "twenty-one trillion, forty-three billion, four hundred three million, one hundred thirty thousand, three hundred".