12321233111 has 4 divisors (see below), whose sum is σ = 13441345224. Its totient is φ = 11201121000.

The previous prime is 12321233059. The next prime is 12321233117. The reversal of 12321233111 is 11133212321.

It is a happy number.

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 12321233111 - 2²⁶ = 12254124247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12321233117) 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, 560056040 + ... + 560056061.

It is an arithmetic number, because the mean of its divisors is an integer number (3360336306).

Almost surely, 2^12321233111 is an apocalyptic number.

12321233111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12321233111 is a deficient number, since it is larger than the sum of its proper divisors (1120112113).

12321233111 is a wasteful number, since it uses less digits than its factorization.

12321233111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120112112.

The product of its digits is 216, while the sum is 20.

Adding to 12321233111 its reverse (11133212321), we get a palindrome (23454445432).

The spelling of 12321233111 in words is "twelve billion, three hundred twenty-one million, two hundred thirty-three thousand, one hundred eleven".