12321421327 has 2 divisors, whose sum is σ = 12321421328. Its totient is φ = 12321421326.

The previous prime is 12321421309. The next prime is 12321421363. The reversal of 12321421327 is 72312412321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12321421327 - 2⁷ = 12321421199 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12321421295 and 12321421304.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12321421027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6160710663 + 6160710664.

It is an arithmetic number, because the mean of its divisors is an integer number (6160710664).

Almost surely, 2^12321421327 is an apocalyptic number.

12321421327 is a deficient number, since it is larger than the sum of its proper divisors (1).

12321421327 is an equidigital number, since it uses as much as digits as its factorization.

12321421327 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 28.

Adding to 12321421327 its reverse (72312412321), we get a palindrome (84633833648).

The spelling of 12321421327 in words is "twelve billion, three hundred twenty-one million, four hundred twenty-one thousand, three hundred twenty-seven".