243112200221 has 16 divisors (see below), whose sum is σ = 281020761600. Its totient is φ = 207992286000.

The previous prime is 243112200197. The next prime is 243112200263. The reversal of 243112200221 is 122002211342.

243112200221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 243112200221 - 2²⁶ = 243045091357 is a prime.

It is a super-3 number, since 3×243112200221³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 243112200193 and 243112200202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243112200521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3820151 + ... + 3883268.

It is an arithmetic number, because the mean of its divisors is an integer number (17563797600).

Almost surely, 2^243112200221 is an apocalyptic number.

It is an amenable number.

243112200221 is a deficient number, since it is larger than the sum of its proper divisors (37908561379).

243112200221 is a wasteful number, since it uses less digits than its factorization.

243112200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7703600.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 243112200221 its reverse (122002211342), we get a palindrome (365114411563).

The spelling of 243112200221 in words is "two hundred forty-three billion, one hundred twelve million, two hundred thousand, two hundred twenty-one".