12421312 has 14 divisors (see below), whose sum is σ = 24648668. Its totient is φ = 6210624.

The previous prime is 12421291. The next prime is 12421327. The reversal of 12421312 is 21312421.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96978 + ... + 97105.

Almost surely, 2^12421312 is an apocalyptic number.

It is an amenable number.

12421312 is a deficient number, since it is larger than the sum of its proper divisors (12227356).

12421312 is an equidigital number, since it uses as much as digits as its factorization.

12421312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194095 (or 194085 counting only the distinct ones).

The product of its digits is 96, while the sum is 16.

The square root of 12421312 is about 3524.3881738537. The cubic root of 12421312 is about 231.5914331096.

Adding to 12421312 its reverse (21312421), we get a palindrome (33733733).

The spelling of 12421312 in words is "twelve million, four hundred twenty-one thousand, three hundred twelve".