243220203200 has 168 divisors, whose sum is σ = 648333191520. Its totient is φ = 89803084800.

The previous prime is 243220203197. The next prime is 243220203203. The reversal of 243220203200 is 2302022342.

It is an interprime number because it is at equal distance from previous prime (243220203197) and next prime (243220203203).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (243220203203) 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, 3480605 + ... + 3549795.

It is an arithmetic number, because the mean of its divisors is an integer number (3859126140).

Almost surely, 2^243220203200 is an apocalyptic number.

243220203200 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 243220203200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (324166595760).

243220203200 is an abundant number, since it is smaller than the sum of its proper divisors (405112988320).

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

243220203200 is an equidigital number, since it uses as much as digits as its factorization.

243220203200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69252 (or 69211 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

Adding to 243220203200 its reverse (2302022342), we get a palindrome (245522225542).

The spelling of 243220203200 in words is "two hundred forty-three billion, two hundred twenty million, two hundred three thousand, two hundred".