12111323233 has 4 divisors (see below), whose sum is σ = 12637902528. Its totient is φ = 11584743940.

The previous prime is 12111323221. The next prime is 12111323251. The reversal of 12111323233 is 33232311121.

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: 33232311121 = 1231 ⋅26996191.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12111323233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12111323293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263289613 + ... + 263289658.

It is an arithmetic number, because the mean of its divisors is an integer number (3159475632).

Almost surely, 2^12111323233 is an apocalyptic number.

It is an amenable number.

12111323233 is a deficient number, since it is larger than the sum of its proper divisors (526579295).

12111323233 is an equidigital number, since it uses as much as digits as its factorization.

12111323233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526579294.

The product of its digits is 648, while the sum is 22.

Adding to 12111323233 its reverse (33232311121), we get a palindrome (45343634354).

The spelling of 12111323233 in words is "twelve billion, one hundred eleven million, three hundred twenty-three thousand, two hundred thirty-three".