12421142243131 has 4 divisors (see below), whose sum is σ = 12486174401664. Its totient is φ = 12356110084600.

The previous prime is 12421142243101. The next prime is 12421142243149. The reversal of 12421142243131 is 13134224112421.

12421142243131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12421142243131 - 2⁵ = 12421142243099 is a prime.

It is a super-2 number, since 2×12421142243131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12421142243093 and 12421142243102.

It is not an unprimeable number, because it can be changed into a prime (12421142243101) 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, 32516078980 + ... + 32516079361.

It is an arithmetic number, because the mean of its divisors is an integer number (3121543600416).

Almost surely, 2^{12421142243131} is an apocalyptic number.

12421142243131 is a deficient number, since it is larger than the sum of its proper divisors (65032158533).

12421142243131 is an equidigital number, since it uses as much as digits as its factorization.

12421142243131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65032158532.

The product of its digits is 9216, while the sum is 31.

Adding to 12421142243131 its reverse (13134224112421), we get a palindrome (25555366355552).

The spelling of 12421142243131 in words is "twelve trillion, four hundred twenty-one billion, one hundred forty-two million, two hundred forty-three thousand, one hundred thirty-one".