12421143311 has 4 divisors (see below), whose sum is σ = 12475862232. Its totient is φ = 12366424392.

The previous prime is 12421143299. The next prime is 12421143337. The reversal of 12421143311 is 11334112421.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12421143311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12421143341) 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, 27359120 + ... + 27359573.

It is an arithmetic number, because the mean of its divisors is an integer number (3118965558).

Almost surely, 2^12421143311 is an apocalyptic number.

12421143311 is a deficient number, since it is larger than the sum of its proper divisors (54718921).

12421143311 is an equidigital number, since it uses as much as digits as its factorization.

12421143311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54718920.

The product of its digits is 576, while the sum is 23.

Adding to 12421143311 its reverse (11334112421), we get a palindrome (23755255732).

The spelling of 12421143311 in words is "twelve billion, four hundred twenty-one million, one hundred forty-three thousand, three hundred eleven".