243112200012 has 192 divisors, whose sum is σ = 725023756800. Its totient is φ = 69672960000.

The previous prime is 243112200011. The next prime is 243112200041. The reversal of 243112200012 is 210002211342.

It is a happy number.

243112200012 is a `hidden beast` number, since 2 + 431 + 1 + 220 + 0 + 0 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (243112200011) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13556812 + ... + 13574732.

It is an arithmetic number, because the mean of its divisors is an integer number (3776165400).

Almost surely, 2^243112200012 is an apocalyptic number.

243112200012 is a gapful number since it is divisible by the number (22) 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 243112200012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (362511878400).

243112200012 is an abundant number, since it is smaller than the sum of its proper divisors (481911556788).

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

243112200012 is a wasteful number, since it uses less digits than its factorization.

243112200012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18565 (or 18557 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 243112200012 its reverse (210002211342), we get a palindrome (453114411354).

The spelling of 243112200012 in words is "two hundred forty-three billion, one hundred twelve million, two hundred thousand, twelve".