11243001123 has 10 divisors (see below), whose sum is σ = 16795100564. Its totient is φ = 7495334028.

The previous prime is 11243001113. The next prime is 11243001163. The reversal of 11243001123 is 32110034211.

11243001123 is a `hidden beast` number, since 112 + 430 + 0 + 1 + 123 = 666.

It is not a de Polignac number, because 11243001123 - 2³⁰ = 10169259299 is a prime.

It is a super-2 number, since 2×11243001123² (a number of 21 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 = 11243001096 and 11243001105.

It is not an unprimeable number, because it can be changed into a prime (11243001103) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 69401161 + ... + 69401322.

Almost surely, 2^11243001123 is an apocalyptic number.

11243001123 is a deficient number, since it is larger than the sum of its proper divisors (5552099441).

11243001123 is an equidigital number, since it uses as much as digits as its factorization.

11243001123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138802495 (or 138802486 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 11243001123 its reverse (32110034211), we get a palindrome (43353035334).

The spelling of 11243001123 in words is "eleven billion, two hundred forty-three million, one thousand, one hundred twenty-three".