12205207 has 4 divisors (see below), whose sum is σ = 13948816. Its totient is φ = 10461600.

The previous prime is 12205181. The next prime is 12205213. The reversal of 12205207 is 70250221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70250221 = 1187 ⋅59183.

It is a cyclic number.

It is not a de Polignac number, because 12205207 - 2¹⁹ = 11680919 is a prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12205217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 871794 + ... + 871807.

It is an arithmetic number, because the mean of its divisors is an integer number (3487204).

Almost surely, 2^12205207 is an apocalyptic number.

12205207 is a deficient number, since it is larger than the sum of its proper divisors (1743609).

12205207 is an equidigital number, since it uses as much as digits as its factorization.

12205207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1743608.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 12205207 is about 3493.5951396806. The cubic root of 12205207 is about 230.2404982791.

Adding to 12205207 its reverse (70250221), we get a palindrome (82455428).

The spelling of 12205207 in words is "twelve million, two hundred five thousand, two hundred seven".