12011204323 has 4 divisors (see below), whose sum is σ = 12304160568. Its totient is φ = 11718248080.

The previous prime is 12011204321. The next prime is 12011204347. The reversal of 12011204323 is 32340211021.

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 12011204323 - 2¹ = 12011204321 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 12011204323.

It is not an unprimeable number, because it can be changed into a prime (12011204321) 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, 146478061 + ... + 146478142.

It is an arithmetic number, because the mean of its divisors is an integer number (3076040142).

Almost surely, 2^12011204323 is an apocalyptic number.

12011204323 is a deficient number, since it is larger than the sum of its proper divisors (292956245).

12011204323 is an equidigital number, since it uses as much as digits as its factorization.

12011204323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292956244.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 12011204323 its reverse (32340211021), we get a palindrome (44351415344).

The spelling of 12011204323 in words is "twelve billion, eleven million, two hundred four thousand, three hundred twenty-three".