11123133231111 has 32 divisors (see below), whose sum is σ = 16220045318400. Its totient is φ = 6724244083200.

The previous prime is 11123133231047. The next prime is 11123133231149. The reversal of 11123133231111 is 11113233132111.

11123133231111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11123133231111 - 2⁶ = 11123133231047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11123133231191) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42511615 + ... + 42772463.

It is an arithmetic number, because the mean of its divisors is an integer number (506876416200).

Almost surely, 2^{11123133231111} is an apocalyptic number.

11123133231111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11123133231111 is a deficient number, since it is larger than the sum of its proper divisors (5096912087289).

11123133231111 is a wasteful number, since it uses less digits than its factorization.

11123133231111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264127.

The product of its digits is 324, while the sum is 24.

Adding to 11123133231111 its reverse (11113233132111), we get a palindrome (22236366363222).

The spelling of 11123133231111 in words is "eleven trillion, one hundred twenty-three billion, one hundred thirty-three million, two hundred thirty-one thousand, one hundred eleven".