12040220323 has 4 divisors (see below), whose sum is σ = 12045872488. Its totient is φ = 12034568160.

The previous prime is 12040220317. The next prime is 12040220363. The reversal of 12040220323 is 32302204021.

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 12040220323 - 2⁹ = 12040219811 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12040220323.

It is not an unprimeable number, because it can be changed into a prime (12040220363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2822886 + ... + 2827147.

It is an arithmetic number, because the mean of its divisors is an integer number (3011468122).

Almost surely, 2^12040220323 is an apocalyptic number.

12040220323 is a deficient number, since it is larger than the sum of its proper divisors (5652165).

12040220323 is an equidigital number, since it uses as much as digits as its factorization.

12040220323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5652164.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 12040220323 its reverse (32302204021), we get a palindrome (44342424344).

The spelling of 12040220323 in words is "twelve billion, forty million, two hundred twenty thousand, three hundred twenty-three".