12321440311 has 2 divisors, whose sum is σ = 12321440312. Its totient is φ = 12321440310.

The previous prime is 12321440303. The next prime is 12321440363. The reversal of 12321440311 is 11304412321.

It is a weak prime.

It is an emirp because it is prime and its reverse (11304412321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12321440311 - 2³ = 12321440303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12321440381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6160720155 + 6160720156.

It is an arithmetic number, because the mean of its divisors is an integer number (6160720156).

Almost surely, 2^12321440311 is an apocalyptic number.

12321440311 is a deficient number, since it is larger than the sum of its proper divisors (1).

12321440311 is an equidigital number, since it uses as much as digits as its factorization.

12321440311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 12321440311 its reverse (11304412321), we get a palindrome (23625852632).

The spelling of 12321440311 in words is "twelve billion, three hundred twenty-one million, four hundred forty thousand, three hundred eleven".