12423212 has 6 divisors (see below), whose sum is σ = 21740628. Its totient is φ = 6211604.

The previous prime is 12423211. The next prime is 12423233. The reversal of 12423212 is 21232421.

It is not an unprimeable number, because it can be changed into a prime (12423211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1552898 + ... + 1552905.

It is an arithmetic number, because the mean of its divisors is an integer number (3623438).

Almost surely, 2^12423212 is an apocalyptic number.

It is an amenable number.

12423212 is a deficient number, since it is larger than the sum of its proper divisors (9317416).

12423212 is a wasteful number, since it uses less digits than its factorization.

12423212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3105807 (or 3105805 counting only the distinct ones).

The product of its digits is 192, while the sum is 17.

The square root of 12423212 is about 3524.6577138780. The cubic root of 12423212 is about 231.6032408073.

Adding to 12423212 its reverse (21232421), we get a palindrome (33655633).

The spelling of 12423212 in words is "twelve million, four hundred twenty-three thousand, two hundred twelve".