243033213210221 has 8 divisors (see below), whose sum is σ = 280873055396160. Its totient is φ = 205973573956128.

The previous prime is 243033213210197. The next prime is 243033213210247. The reversal of 243033213210221 is 122012312330342.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243033213210221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243033213210121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195050732291 + ... + 195050733536.

It is an arithmetic number, because the mean of its divisors is an integer number (35109131924520).

Almost surely, 2^{243033213210221} is an apocalyptic number.

It is an amenable number.

243033213210221 is a deficient number, since it is larger than the sum of its proper divisors (37839842185939).

243033213210221 is an equidigital number, since it uses as much as digits as its factorization.

243033213210221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390101465923.

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 243033213210221 its reverse (122012312330342), we get a palindrome (365045525540563).

The spelling of 243033213210221 in words is "two hundred forty-three trillion, thirty-three billion, two hundred thirteen million, two hundred ten thousand, two hundred twenty-one".