243434244221 has 8 divisors (see below), whose sum is σ = 278214105600. Its totient is φ = 208655268048.

The previous prime is 243434244169. The next prime is 243434244257. The reversal of 243434244221 is 122442434342.

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

It is a cyclic number.

It is not a de Polignac number, because 243434244221 - 2¹⁰ = 243434243197 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 (243434244281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 544820 + ... + 885266.

It is an arithmetic number, because the mean of its divisors is an integer number (34776763200).

Almost surely, 2^243434244221 is an apocalyptic number.

It is an amenable number.

243434244221 is a deficient number, since it is larger than the sum of its proper divisors (34779861379).

243434244221 is a wasteful number, since it uses less digits than its factorization.

243434244221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442603.

The product of its digits is 147456, while the sum is 35.

Adding to 243434244221 its reverse (122442434342), we get a palindrome (365876678563).

The spelling of 243434244221 in words is "two hundred forty-three billion, four hundred thirty-four million, two hundred forty-four thousand, two hundred twenty-one".