16327121 has 2 divisors, whose sum is σ = 16327122. Its totient is φ = 16327120.

The previous prime is 16327117. The next prime is 16327141. The reversal of 16327121 is 12172361.

16327121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12327121 + 4000000 = 3511^2 + 2000^2 .

It is an emirp because it is prime and its reverse (12172361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16327121 - 2² = 16327117 is a prime.

It is a Chen prime.

It is equal to p_1050782 and since 16327121 and 1050782 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (16327141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8163560 + 8163561.

It is an arithmetic number, because the mean of its divisors is an integer number (8163561).

Almost surely, 2^16327121 is an apocalyptic number.

It is an amenable number.

16327121 is a deficient number, since it is larger than the sum of its proper divisors (1).

16327121 is an equidigital number, since it uses as much as digits as its factorization.

16327121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 504, while the sum is 23.

The square root of 16327121 is about 4040.6832343058. The cubic root of 16327121 is about 253.6899154818.

Adding to 16327121 its reverse (12172361), we get a palindrome (28499482).

The spelling of 16327121 in words is "sixteen million, three hundred twenty-seven thousand, one hundred twenty-one".