21130024300 has 144 divisors (see below), whose sum is σ = 57641310720. Its totient is φ = 6585691200.

The previous prime is 21130024291. The next prime is 21130024303. The reversal of 21130024300 is 342003112.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21130024303) 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 47 ways as a sum of consecutive naturals, for example, 920361 + ... + 943039.

It is an arithmetic number, because the mean of its divisors is an integer number (400286880).

Almost surely, 2^21130024300 is an apocalyptic number.

21130024300 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 21130024300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28820655360).

21130024300 is an abundant number, since it is smaller than the sum of its proper divisors (36511286420).

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

21130024300 is a wasteful number, since it uses less digits than its factorization.

21130024300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22733 (or 22704 counting only the distinct ones).

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

Adding to 21130024300 its reverse (342003112), we get a palindrome (21472027412).

The spelling of 21130024300 in words is "twenty-one billion, one hundred thirty million, twenty-four thousand, three hundred".