12207005 has 4 divisors (see below), whose sum is σ = 14648412. Its totient is φ = 9765600.

The previous prime is 12206993. The next prime is 12207007. The reversal of 12207005 is 50070221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6046681 + 6160324 = 2459^2 + 2482^2 .

It is not a de Polignac number, because 12207005 - 2⁴ = 12206989 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12207007) 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, 1220696 + ... + 1220705.

It is an arithmetic number, because the mean of its divisors is an integer number (3662103).

Almost surely, 2^12207005 is an apocalyptic number.

It is an amenable number.

12207005 is a deficient number, since it is larger than the sum of its proper divisors (2441407).

12207005 is an equidigital number, since it uses as much as digits as its factorization.

12207005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2441406.

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 12207005 is about 3493.8524582472. The cubic root of 12207005 is about 230.2518036203.

Adding to 12207005 its reverse (50070221), we get a palindrome (62277226).

The spelling of 12207005 in words is "twelve million, two hundred seven thousand, five".