12132291 has 8 divisors (see below), whose sum is σ = 16220160. Its totient is φ = 8066312.

The previous prime is 12132277. The next prime is 12132299. The reversal of 12132291 is 19223121.

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

It is a cyclic number.

It is not a de Polignac number, because 12132291 - 2⁵ = 12132259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12132299) 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, 4131 + ... + 6428.

It is an arithmetic number, because the mean of its divisors is an integer number (2027520).

Almost surely, 2^12132291 is an apocalyptic number.

12132291 is a deficient number, since it is larger than the sum of its proper divisors (4087869).

12132291 is a wasteful number, since it uses less digits than its factorization.

12132291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10945.

The product of its digits is 216, while the sum is 21.

The square root of 12132291 is about 3483.1438385459. The cubic root of 12132291 is about 229.7810834443.

The spelling of 12132291 in words is "twelve million, one hundred thirty-two thousand, two hundred ninety-one".