12132205 has 4 divisors (see below), whose sum is σ = 14558652. Its totient is φ = 9705760.

The previous prime is 12132151. The next prime is 12132217. The reversal of 12132205 is 50223121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50223121 = 13 ⋅3863317.

It can be written as a sum of positive squares in 2 ways, for example, as 5008644 + 7123561 = 2238^2 + 2669^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12132205 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1213216 + ... + 1213225.

It is an arithmetic number, because the mean of its divisors is an integer number (3639663).

Almost surely, 2^12132205 is an apocalyptic number.

It is an amenable number.

12132205 is a deficient number, since it is larger than the sum of its proper divisors (2426447).

12132205 is an equidigital number, since it uses as much as digits as its factorization.

12132205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2426446.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 12132205 is about 3483.1314933548. The cubic root of 12132205 is about 229.7805405070.

Adding to 12132205 its reverse (50223121), we get a palindrome (62355326).

The spelling of 12132205 in words is "twelve million, one hundred thirty-two thousand, two hundred five".