21223231230200 has 96 divisors (see below), whose sum is σ = 49676829586560. Its totient is φ = 8432047344000.

The previous prime is 21223231230193. The next prime is 21223231230203. The reversal of 21223231230200 is 203213232212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21223231230203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 278617319 + ... + 278693481.

It is an arithmetic number, because the mean of its divisors is an integer number (517466974860).

Almost surely, 2^{21223231230200} is an apocalyptic number.

21223231230200 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 21223231230200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24838414793280).

21223231230200 is an abundant number, since it is smaller than the sum of its proper divisors (28453598356360).

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

21223231230200 is a wasteful number, since it uses less digits than its factorization.

21223231230200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85557 (or 85548 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21223231230200 its reverse (203213232212), we get a palindrome (21426444462412).

The spelling of 21223231230200 in words is "twenty-one trillion, two hundred twenty-three billion, two hundred thirty-one million, two hundred thirty thousand, two hundred".