12088181 has 4 divisors (see below), whose sum is σ = 13815072. Its totient is φ = 10361292.

The previous prime is 12088177. The next prime is 12088189. The reversal of 12088181 is 18188021.

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: 18188021 = 67 ⋅271463.

It is a cyclic number.

It is not a de Polignac number, because 12088181 - 2² = 12088177 is a prime.

It is a super-2 number, since 2×12088181² = 292248239777522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12088189) 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, 863435 + ... + 863448.

It is an arithmetic number, because the mean of its divisors is an integer number (3453768).

Almost surely, 2^12088181 is an apocalyptic number.

It is an amenable number.

12088181 is a deficient number, since it is larger than the sum of its proper divisors (1726891).

12088181 is an equidigital number, since it uses as much as digits as its factorization.

12088181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1726890.

The product of its (nonzero) digits is 1024, while the sum is 29.

The square root of 12088181 is about 3476.8061493273. The cubic root of 12088181 is about 229.5022696016.

The spelling of 12088181 in words is "twelve million, eighty-eight thousand, one hundred eighty-one".