12390212 has 12 divisors (see below), whose sum is σ = 22958460. Its totient is φ = 5830656.

The previous prime is 12390211. The next prime is 12390251. The reversal of 12390212 is 21209321.

12390212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 5494336 + 6895876 = 2344^2 + 2626^2 .

It is not an unprimeable number, because it can be changed into a prime (12390211) 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, 91037 + ... + 91172.

It is an arithmetic number, because the mean of its divisors is an integer number (1913205).

Almost surely, 2^12390212 is an apocalyptic number.

It is an amenable number.

12390212 is a deficient number, since it is larger than the sum of its proper divisors (10568248).

12390212 is a wasteful number, since it uses less digits than its factorization.

12390212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182230 (or 182228 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 12390212 is about 3519.9732953532. The cubic root of 12390212 is about 231.3979883524.

Adding to 12390212 its reverse (21209321), we get a palindrome (33599533).

The spelling of 12390212 in words is "twelve million, three hundred ninety thousand, two hundred twelve".