12132217 has 2 divisors, whose sum is σ = 12132218. Its totient is φ = 12132216.

The previous prime is 12132151. The next prime is 12132223. The reversal of 12132217 is 71223121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9511056 + 2621161 = 3084^2 + 1619^2 .

It is an emirp because it is prime and its reverse (71223121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12132217 - 2¹¹ = 12130169 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12132194 and 12132203.

It is not a weakly prime, because it can be changed into another prime (12132277) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6066108 + 6066109.

It is an arithmetic number, because the mean of its divisors is an integer number (6066109).

Almost surely, 2^12132217 is an apocalyptic number.

It is an amenable number.

12132217 is a deficient number, since it is larger than the sum of its proper divisors (1).

12132217 is an equidigital number, since it uses as much as digits as its factorization.

12132217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 168, while the sum is 19.

The square root of 12132217 is about 3483.1332159422. The cubic root of 12132217 is about 229.7806162659.

Adding to 12132217 its reverse (71223121), we get a palindrome (83355338).

The spelling of 12132217 in words is "twelve million, one hundred thirty-two thousand, two hundred seventeen".