12021231323 has 2 divisors, whose sum is σ = 12021231324. Its totient is φ = 12021231322.

The previous prime is 12021231247. The next prime is 12021231329. The reversal of 12021231323 is 32313212021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12021231323 - 2¹² = 12021227227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12021231295 and 12021231304.

It is not a weakly prime, because it can be changed into another prime (12021231329) 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 as a sum of consecutive naturals, namely, 6010615661 + 6010615662.

It is an arithmetic number, because the mean of its divisors is an integer number (6010615662).

Almost surely, 2^12021231323 is an apocalyptic number.

12021231323 is a deficient number, since it is larger than the sum of its proper divisors (1).

12021231323 is an equidigital number, since it uses as much as digits as its factorization.

12021231323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 12021231323 its reverse (32313212021), we get a palindrome (44334443344).

The spelling of 12021231323 in words is "twelve billion, twenty-one million, two hundred thirty-one thousand, three hundred twenty-three".