12132861 has 8 divisors (see below), whose sum is σ = 17421600. Its totient is φ = 7466352.

The previous prime is 12132859. The next prime is 12132871. The reversal of 12132861 is 16823121.

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

It is not a de Polignac number, because 12132861 - 2¹ = 12132859 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12132821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155511 + ... + 155588.

It is an arithmetic number, because the mean of its divisors is an integer number (2177700).

Almost surely, 2^12132861 is an apocalyptic number.

It is an amenable number.

12132861 is a deficient number, since it is larger than the sum of its proper divisors (5288739).

12132861 is a wasteful number, since it uses less digits than its factorization.

12132861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311115.

The product of its digits is 576, while the sum is 24.

The square root of 12132861 is about 3483.2256602178. The cubic root of 12132861 is about 229.7846819174.

Adding to 12132861 its reverse (16823121), we get a palindrome (28955982).

The spelling of 12132861 in words is "twelve million, one hundred thirty-two thousand, eight hundred sixty-one".