12127161 has 8 divisors (see below), whose sum is σ = 16545760. Its totient is φ = 7896672.

The previous prime is 12127139. The next prime is 12127177. The reversal of 12127161 is 16172121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12127161 - 2¹³ = 12118969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12127061) 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 in 7 ways as a sum of consecutive naturals, for example, 46876 + ... + 47133.

It is an arithmetic number, because the mean of its divisors is an integer number (2068220).

Almost surely, 2^12127161 is an apocalyptic number.

It is an amenable number.

12127161 is a deficient number, since it is larger than the sum of its proper divisors (4418599).

12127161 is an equidigital number, since it uses as much as digits as its factorization.

12127161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94055.

The product of its digits is 168, while the sum is 21.

The square root of 12127161 is about 3482.4073569874. The cubic root of 12127161 is about 229.7486921139.

Adding to 12127161 its reverse (16172121), we get a palindrome (28299282).

The spelling of 12127161 in words is "twelve million, one hundred twenty-seven thousand, one hundred sixty-one".