12463221 has 16 divisors (see below), whose sum is σ = 17922240. Its totient is φ = 7678080.

The previous prime is 12463211. The next prime is 12463229. The reversal of 12463221 is 12236421.

It is not a de Polignac number, because 12463221 - 2⁵ = 12463189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12463229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 330 + ... + 5003.

It is an arithmetic number, because the mean of its divisors is an integer number (1120140).

Almost surely, 2^12463221 is an apocalyptic number.

It is an amenable number.

12463221 is a deficient number, since it is larger than the sum of its proper divisors (5459019).

12463221 is a wasteful number, since it uses less digits than its factorization.

12463221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5396.

The product of its digits is 576, while the sum is 21.

The square root of 12463221 is about 3530.3287382339. The cubic root of 12463221 is about 231.8516007464.

Adding to 12463221 its reverse (12236421), we get a palindrome (24699642).

The spelling of 12463221 in words is "twelve million, four hundred sixty-three thousand, two hundred twenty-one".