11133331123 has 4 divisors (see below), whose sum is σ = 11144845360. Its totient is φ = 11121816888.

The previous prime is 11133331091. The next prime is 11133331129. The reversal of 11133331123 is 32113333111.

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 11133331123 - 2⁵ = 11133331091 is a prime.

It is a super-2 number, since 2×11133331123² (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 = 11133331094 and 11133331103.

It is not an unprimeable number, because it can be changed into a prime (11133331129) 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, 5755668 + ... + 5757601.

It is an arithmetic number, because the mean of its divisors is an integer number (2786211340).

Almost surely, 2^11133331123 is an apocalyptic number.

11133331123 is a deficient number, since it is larger than the sum of its proper divisors (11514237).

11133331123 is an equidigital number, since it uses as much as digits as its factorization.

11133331123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11514236.

The product of its digits is 486, while the sum is 22.

Adding to 11133331123 its reverse (32113333111), we get a palindrome (43246664234).

The spelling of 11133331123 in words is "eleven billion, one hundred thirty-three million, three hundred thirty-one thousand, one hundred twenty-three".