12218896 has 20 divisors (see below), whose sum is σ = 23921212. Its totient is φ = 6045696.

The previous prime is 12218891. The next prime is 12218897. The reversal of 12218896 is 69881221.

It can be written as a sum of positive squares in 2 ways, for example, as 2359296 + 9859600 = 1536^2 + 3140^2 .

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (12218891) 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, 2385 + ... + 5488.

Almost surely, 2^12218896 is an apocalyptic number.

12218896 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12218896 is a deficient number, since it is larger than the sum of its proper divisors (11702316).

12218896 is an equidigital number, since it uses as much as digits as its factorization.

12218896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7978 (or 7972 counting only the distinct ones).

The product of its digits is 13824, while the sum is 37.

The square root of 12218896 is about 3495.5537472624. The cubic root of 12218896 is about 230.3265431015.

The spelling of 12218896 in words is "twelve million, two hundred eighteen thousand, eight hundred ninety-six".