11343112421 has 4 divisors (see below), whose sum is σ = 11343767232. Its totient is φ = 11342457612.

The previous prime is 11343112411. The next prime is 11343112441. The reversal of 11343112421 is 12421134311.

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: 12421134311 = 103 ⋅120593537.

It is a cyclic number.

It is not a de Polignac number, because 11343112421 - 2³⁰ = 10269370597 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 (11343112411) 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, 300695 + ... + 336308.

It is an arithmetic number, because the mean of its divisors is an integer number (2835941808).

Almost surely, 2^11343112421 is an apocalyptic number.

It is an amenable number.

11343112421 is a deficient number, since it is larger than the sum of its proper divisors (654811).

11343112421 is an equidigital number, since it uses as much as digits as its factorization.

11343112421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654810.

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

Adding to 11343112421 its reverse (12421134311), we get a palindrome (23764246732).

The spelling of 11343112421 in words is "eleven billion, three hundred forty-three million, one hundred twelve thousand, four hundred twenty-one".