21403230200 has 144 divisors (see below), whose sum is σ = 57577695000. Its totient is φ = 7373203200.

The previous prime is 21403230193. The next prime is 21403230203. The reversal of 21403230200 is 203230412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21403230203) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 436526 + ... + 483074.

Almost surely, 2^21403230200 is an apocalyptic number.

21403230200 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 21403230200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28788847500).

21403230200 is an abundant number, since it is smaller than the sum of its proper divisors (36174464800).

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

21403230200 is a wasteful number, since it uses less digits than its factorization.

21403230200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46606 (or 46586 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 21403230200 its reverse (203230412), we get a palindrome (21606460612).

The spelling of 21403230200 in words is "twenty-one billion, four hundred three million, two hundred thirty thousand, two hundred".