12203218 has 4 divisors (see below), whose sum is σ = 18304830. Its totient is φ = 6101608.

The previous prime is 12203207. The next prime is 12203231. The reversal of 12203218 is 81230221.

12203218 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 10608049 + 1595169 = 3257^2 + 1263^2 .

It is a zygodrome in base 5.

It is a junction number, because it is equal to n+sod(n) for n = 12203195 and 12203204.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3050803 + ... + 3050806.

Almost surely, 2^12203218 is an apocalyptic number.

12203218 is a deficient number, since it is larger than the sum of its proper divisors (6101612).

12203218 is an equidigital number, since it uses as much as digits as its factorization.

12203218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6101611.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 12203218 is about 3493.3104643017. The cubic root of 12203218 is about 230.2279906876.

Adding to 12203218 its reverse (81230221), we get a palindrome (93433439).

It can be divided in two parts, 12203 and 218, that added together give a palindrome (12421).

The spelling of 12203218 in words is "twelve million, two hundred three thousand, two hundred eighteen".