243114454221 has 24 divisors (see below), whose sum is σ = 330394062240. Its totient is φ = 159000493536.

The previous prime is 243114454201. The next prime is 243114454241. The reversal of 243114454221 is 122454411342.

It is an interprime number because it is at equal distance from previous prime (243114454201) and next prime (243114454241).

It is a de Polignac number, because none of the positive numbers 2^k-243114454221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243114454201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3369795 + ... + 3441183.

It is an arithmetic number, because the mean of its divisors is an integer number (13766419260).

Almost surely, 2^243114454221 is an apocalyptic number.

It is an amenable number.

243114454221 is a deficient number, since it is larger than the sum of its proper divisors (87279608019).

243114454221 is a wasteful number, since it uses less digits than its factorization.

243114454221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71705 (or 71602 counting only the distinct ones).

The product of its digits is 30720, while the sum is 33.

Adding to 243114454221 its reverse (122454411342), we get a palindrome (365568865563).

The spelling of 243114454221 in words is "two hundred forty-three billion, one hundred fourteen million, four hundred fifty-four thousand, two hundred twenty-one".