11242431121 has 4 divisors (see below), whose sum is σ = 11242907200. Its totient is φ = 11241955044.

The previous prime is 11242431113. The next prime is 11242431173. The reversal of 11242431121 is 12113424211.

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 11242431121 - 2³ = 11242431113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11242431092 and 11242431101.

It is not an unprimeable number, because it can be changed into a prime (11242431181) 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, 200661 + ... + 250498.

It is an arithmetic number, because the mean of its divisors is an integer number (2810726800).

Almost surely, 2^11242431121 is an apocalyptic number.

It is an amenable number.

11242431121 is a deficient number, since it is larger than the sum of its proper divisors (476079).

11242431121 is an equidigital number, since it uses as much as digits as its factorization.

11242431121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476078.

The product of its digits is 384, while the sum is 22.

Adding to 11242431121 its reverse (12113424211), we get a palindrome (23355855332).

The spelling of 11242431121 in words is "eleven billion, two hundred forty-two million, four hundred thirty-one thousand, one hundred twenty-one".