243411144221 has 16 divisors (see below), whose sum is σ = 291737856000. Its totient is φ = 198564025968.

The previous prime is 243411144211. The next prime is 243411144227. The reversal of 243411144221 is 122441114342.

It is a de Polignac number, because none of the positive numbers 2^k-243411144221 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 (243411144227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3766631 + ... + 3830708.

It is an arithmetic number, because the mean of its divisors is an integer number (18233616000).

Almost surely, 2^243411144221 is an apocalyptic number.

It is an amenable number.

243411144221 is a deficient number, since it is larger than the sum of its proper divisors (48326711779).

243411144221 is a wasteful number, since it uses less digits than its factorization.

243411144221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7597568.

The product of its digits is 6144, while the sum is 29.

Adding to 243411144221 its reverse (122441114342), we get a palindrome (365852258563).

The spelling of 243411144221 in words is "two hundred forty-three billion, four hundred eleven million, one hundred forty-four thousand, two hundred twenty-one".