21024230434300 has 144 divisors (see below), whose sum is σ = 47156219621280. Its totient is φ = 8132371287040.

The previous prime is 21024230434283. The next prime is 21024230434301. The reversal of 21024230434300 is 343403242012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21024230434301) 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, 111624606 + ... + 111812794.

It is an arithmetic number, because the mean of its divisors is an integer number (327473747370).

Almost surely, 2^{21024230434300} is an apocalyptic number.

21024230434300 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 21024230434300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23578109810640).

21024230434300 is an abundant number, since it is smaller than the sum of its proper divisors (26131989186980).

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

21024230434300 is a wasteful number, since it uses less digits than its factorization.

21024230434300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188560 (or 188553 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 21024230434300 its reverse (343403242012), we get a palindrome (21367633676312).

The spelling of 21024230434300 in words is "twenty-one trillion, twenty-four billion, two hundred thirty million, four hundred thirty-four thousand, three hundred".