12130181 has 4 divisors (see below), whose sum is σ = 13863072. Its totient is φ = 10397292.

The previous prime is 12130169. The next prime is 12130259. The reversal of 12130181 is 18103121.

12130181 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 12130181 - 2¹⁴ = 12113797 is a prime.

It is a super-2 number, since 2×12130181² = 294282582185522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12130681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 866435 + ... + 866448.

It is an arithmetic number, because the mean of its divisors is an integer number (3465768).

Almost surely, 2^12130181 is an apocalyptic number.

It is an amenable number.

12130181 is a deficient number, since it is larger than the sum of its proper divisors (1732891).

12130181 is an equidigital number, since it uses as much as digits as its factorization.

12130181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1732890.

The product of its (nonzero) digits is 48, while the sum is 17.

The square root of 12130181 is about 3482.8409380849. The cubic root of 12130181 is about 229.7677618000.

The spelling of 12130181 in words is "twelve million, one hundred thirty thousand, one hundred eighty-one".