12321151 has 2 divisors, whose sum is σ = 12321152. Its totient is φ = 12321150.

The previous prime is 12321149. The next prime is 12321161. The reversal of 12321151 is 15112321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12321151 - 2¹ = 12321149 is a prime.

Together with 12321149, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12321121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6160575 + 6160576.

It is an arithmetic number, because the mean of its divisors is an integer number (6160576).

Almost surely, 2^12321151 is an apocalyptic number.

12321151 is a deficient number, since it is larger than the sum of its proper divisors (1).

12321151 is an equidigital number, since it uses as much as digits as its factorization.

12321151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60, while the sum is 16.

The square root of 12321151 is about 3510.1497119069. The cubic root of 12321151 is about 230.9672623408.

Adding to 12321151 its reverse (15112321), we get a palindrome (27433472).

The spelling of 12321151 in words is "twelve million, three hundred twenty-one thousand, one hundred fifty-one".