12130161 has 4 divisors (see below), whose sum is σ = 16173552. Its totient is φ = 8086772.

The previous prime is 12130159. The next prime is 12130169. The reversal of 12130161 is 16103121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16103121 = 3 ⋅5367707.

It is a cyclic number.

It is not a de Polignac number, because 12130161 - 2¹ = 12130159 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12130161.

It is not an unprimeable number, because it can be changed into a prime (12130169) 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 3 ways as a sum of consecutive naturals, for example, 2021691 + ... + 2021696.

It is an arithmetic number, because the mean of its divisors is an integer number (4043388).

Almost surely, 2^12130161 is an apocalyptic number.

It is an amenable number.

12130161 is a deficient number, since it is larger than the sum of its proper divisors (4043391).

12130161 is an equidigital number, since it uses as much as digits as its factorization.

12130161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4043390.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 12130161 is about 3482.8380668644. The cubic root of 12130161 is about 229.7676355211.

Adding to 12130161 its reverse (16103121), we get a palindrome (28233282).

The spelling of 12130161 in words is "twelve million, one hundred thirty thousand, one hundred sixty-one".