12201213 has 4 divisors (see below), whose sum is σ = 16268288. Its totient is φ = 8134140.

The previous prime is 12201193. The next prime is 12201229. The reversal of 12201213 is 31210221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12201213 - 2⁸ = 12200957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12201263) 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, 2033533 + ... + 2033538.

It is an arithmetic number, because the mean of its divisors is an integer number (4067072).

Almost surely, 2^12201213 is an apocalyptic number.

It is an amenable number.

12201213 is a deficient number, since it is larger than the sum of its proper divisors (4067075).

12201213 is an equidigital number, since it uses as much as digits as its factorization.

12201213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4067074.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 12201213 is about 3493.0234754436. The cubic root of 12201213 is about 230.2153811064.

Adding to 12201213 its reverse (31210221), we get a palindrome (43411434).

The spelling of 12201213 in words is "twelve million, two hundred one thousand, two hundred thirteen".