12221488 has 10 divisors (see below), whose sum is σ = 23679164. Its totient is φ = 6110736.

The previous prime is 12221483. The next prime is 12221491. The reversal of 12221488 is 88412221.

12221488 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (12221483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 381906 + ... + 381937.

Almost surely, 2^12221488 is an apocalyptic number.

It is an amenable number.

12221488 is a deficient number, since it is larger than the sum of its proper divisors (11457676).

12221488 is an equidigital number, since it uses as much as digits as its factorization.

12221488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763851 (or 763845 counting only the distinct ones).

The product of its digits is 2048, while the sum is 28.

The square root of 12221488 is about 3495.9244843103. The cubic root of 12221488 is about 230.3428283750.

The spelling of 12221488 in words is "twelve million, two hundred twenty-one thousand, four hundred eighty-eight".