12133211423 has 4 divisors (see below), whose sum is σ = 12846929760. Its totient is φ = 11419493088.

The previous prime is 12133211417. The next prime is 12133211437. The reversal of 12133211423 is 32411233121.

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 12133211423 - 2⁶ = 12133211359 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 (12133211443) 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, 356859143 + ... + 356859176.

It is an arithmetic number, because the mean of its divisors is an integer number (3211732440).

Almost surely, 2^12133211423 is an apocalyptic number.

12133211423 is a deficient number, since it is larger than the sum of its proper divisors (713718337).

12133211423 is an equidigital number, since it uses as much as digits as its factorization.

12133211423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713718336.

The product of its digits is 864, while the sum is 23.

Adding to 12133211423 its reverse (32411233121), we get a palindrome (44544444544).

The spelling of 12133211423 in words is "twelve billion, one hundred thirty-three million, two hundred eleven thousand, four hundred twenty-three".