12423315443121 has 24 divisors (see below), whose sum is σ = 19576620073920. Its totient is φ = 7529094914400.

The previous prime is 12423315443113. The next prime is 12423315443129. The reversal of 12423315443121 is 12134451332421.

12423315443121 is a `hidden beast` number, since 1 + 2 + 4 + 2 + 331 + 5 + 4 + 4 + 312 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (12423315443113) and next prime (12423315443129).

It is not a de Polignac number, because 12423315443121 - 2³ = 12423315443113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12423315443129) 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 23 ways as a sum of consecutive naturals, for example, 2495751 + ... + 5574531.

It is an arithmetic number, because the mean of its divisors is an integer number (815692503080).

Almost surely, 2^{12423315443121} is an apocalyptic number.

12423315443121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12423315443121 is a deficient number, since it is larger than the sum of its proper divisors (7153304630799).

12423315443121 is a wasteful number, since it uses less digits than its factorization.

12423315443121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3119557 (or 3119554 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

Adding to 12423315443121 its reverse (12134451332421), we get a palindrome (24557766775542).

The spelling of 12423315443121 in words is "twelve trillion, four hundred twenty-three billion, three hundred fifteen million, four hundred forty-three thousand, one hundred twenty-one".