12011321323 has 2 divisors, whose sum is σ = 12011321324. Its totient is φ = 12011321322.

The previous prime is 12011321317. The next prime is 12011321341. The reversal of 12011321323 is 32312311021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12011321323 - 2¹³ = 12011313131 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12011321323.

It is not a weakly prime, because it can be changed into another prime (12011321353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005660661 + 6005660662.

It is an arithmetic number, because the mean of its divisors is an integer number (6005660662).

Almost surely, 2^12011321323 is an apocalyptic number.

12011321323 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011321323 is an equidigital number, since it uses as much as digits as its factorization.

12011321323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 12011321323 its reverse (32312311021), we get a palindrome (44323632344).

The spelling of 12011321323 in words is "twelve billion, eleven million, three hundred twenty-one thousand, three hundred twenty-three".