12132661 has 4 divisors (see below), whose sum is σ = 12660192. Its totient is φ = 11605132.

The previous prime is 12132641. The next prime is 12132667. The reversal of 12132661 is 16623121.

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 12132661 - 2⁵ = 12132629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12132667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263731 + ... + 263776.

It is an arithmetic number, because the mean of its divisors is an integer number (3165048).

Almost surely, 2^12132661 is an apocalyptic number.

It is an amenable number.

12132661 is a deficient number, since it is larger than the sum of its proper divisors (527531).

12132661 is an equidigital number, since it uses as much as digits as its factorization.

12132661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527530.

The product of its digits is 432, while the sum is 22.

The square root of 12132661 is about 3483.1969510781. The cubic root of 12132661 is about 229.7834193081.

Adding to 12132661 its reverse (16623121), we get a palindrome (28755782).

The spelling of 12132661 in words is "twelve million, one hundred thirty-two thousand, six hundred sixty-one".