12209707 has 4 divisors (see below), whose sum is σ = 12469536. Its totient is φ = 11949880.

The previous prime is 12209683. The next prime is 12209737. The reversal of 12209707 is 70790221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70790221 = 317 ⋅223313.

It is a cyclic number.

It is not a de Polignac number, because 12209707 - 2⁷ = 12209579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12209737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129844 + ... + 129937.

It is an arithmetic number, because the mean of its divisors is an integer number (3117384).

Almost surely, 2^12209707 is an apocalyptic number.

12209707 is a deficient number, since it is larger than the sum of its proper divisors (259829).

12209707 is an equidigital number, since it uses as much as digits as its factorization.

12209707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259828.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 12209707 is about 3494.2391160308. The cubic root of 12209707 is about 230.2687909833.

Adding to 12209707 its reverse (70790221), we get a palindrome (82999928).

The spelling of 12209707 in words is "twelve million, two hundred nine thousand, seven hundred seven".