12203213 has 6 divisors (see below), whose sum is σ = 13413582. Its totient is φ = 11093720.

The previous prime is 12203207. The next prime is 12203231. The reversal of 12203213 is 31230221.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 8369449 + 3833764 = 2893^2 + 1958^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12203213 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 (12203203) 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 5 ways as a sum of consecutive naturals, for example, 50306 + ... + 50547.

It is an arithmetic number, because the mean of its divisors is an integer number (2235597).

Almost surely, 2^12203213 is an apocalyptic number.

It is an amenable number.

12203213 is a deficient number, since it is larger than the sum of its proper divisors (1210369).

12203213 is a wasteful number, since it uses less digits than its factorization.

12203213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100875 (or 100864 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 12203213 is about 3493.3097486481. The cubic root of 12203213 is about 230.2279592440.

Adding to 12203213 its reverse (31230221), we get a palindrome (43433434).

The spelling of 12203213 in words is "twelve million, two hundred three thousand, two hundred thirteen".