243441511121 has 4 divisors (see below), whose sum is σ = 254025924672. Its totient is φ = 232857097572.

The previous prime is 243441511111. The next prime is 243441511141. The reversal of 243441511121 is 121115144342.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 121115144342 = 2 ⋅60557572171.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243441511121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243441511111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5292206741 + ... + 5292206786.

It is an arithmetic number, because the mean of its divisors is an integer number (63506481168).

Almost surely, 2^243441511121 is an apocalyptic number.

It is an amenable number.

243441511121 is a deficient number, since it is larger than the sum of its proper divisors (10584413551).

243441511121 is a wasteful number, since it uses less digits than its factorization.

243441511121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10584413550.

The product of its digits is 3840, while the sum is 29.

Adding to 243441511121 its reverse (121115144342), we get a palindrome (364556655463).

The spelling of 243441511121 in words is "two hundred forty-three billion, four hundred forty-one million, five hundred eleven thousand, one hundred twenty-one".