12040323223 has 4 divisors (see below), whose sum is σ = 12040561008. Its totient is φ = 12040085440.

The previous prime is 12040323203. The next prime is 12040323233. The reversal of 12040323223 is 32232304021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32232304021 = 8581 ⋅3756241.

It is a cyclic number.

It is not a de Polignac number, because 12040323223 - 2²¹ = 12038226071 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12040323194 and 12040323203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12040323203) 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, 9211 + ... + 155452.

It is an arithmetic number, because the mean of its divisors is an integer number (3010140252).

Almost surely, 2^12040323223 is an apocalyptic number.

12040323223 is a deficient number, since it is larger than the sum of its proper divisors (237785).

12040323223 is an equidigital number, since it uses as much as digits as its factorization.

12040323223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237784.

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 12040323223 its reverse (32232304021), we get a palindrome (44272627244).

The spelling of 12040323223 in words is "twelve billion, forty million, three hundred twenty-three thousand, two hundred twenty-three".