243220001200 has 60 divisors (see below), whose sum is σ = 637457523768. Its totient is φ = 88443635200.

The previous prime is 243220001131. The next prime is 243220001207. The reversal of 243220001200 is 2100022342.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (243220001207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27634237 + ... + 27643036.

Almost surely, 2^243220001200 is an apocalyptic number.

243220001200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243220001200 is an abundant number, since it is smaller than the sum of its proper divisors (394237522568).

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

243220001200 is a wasteful number, since it uses less digits than its factorization.

243220001200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55277302 (or 55277291 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 243220001200 its reverse (2100022342), we get a palindrome (245320023542).

The spelling of 243220001200 in words is "two hundred forty-three billion, two hundred twenty million, one thousand, two hundred".