12432441121 has 4 divisors (see below), whose sum is σ = 12432758832. Its totient is φ = 12432123412.

The previous prime is 12432441113. The next prime is 12432441127. The reversal of 12432441121 is 12114423421.

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.

It is a cyclic number.

It is not a de Polignac number, because 12432441121 - 2³ = 12432441113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12432441127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90295 + ... + 181708.

It is an arithmetic number, because the mean of its divisors is an integer number (3108189708).

Almost surely, 2^12432441121 is an apocalyptic number.

It is an amenable number.

12432441121 is a deficient number, since it is larger than the sum of its proper divisors (317711).

12432441121 is an equidigital number, since it uses as much as digits as its factorization.

12432441121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317710.

The product of its digits is 1536, while the sum is 25.

Adding to 12432441121 its reverse (12114423421), we get a palindrome (24546864542).

The spelling of 12432441121 in words is "twelve billion, four hundred thirty-two million, four hundred forty-one thousand, one hundred twenty-one".