12201440 has 24 divisors (see below), whose sum is σ = 28826280. Its totient is φ = 4880512.

The previous prime is 12201419. The next prime is 12201457. The reversal of 12201440 is 4410221.

12201440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37970 + ... + 38289.

It is an arithmetic number, because the mean of its divisors is an integer number (1201095).

Almost surely, 2^12201440 is an apocalyptic number.

12201440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12201440 is an abundant number, since it is smaller than the sum of its proper divisors (16624840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12201440 is an equidigital number, since it uses as much as digits as its factorization.

12201440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76274 (or 76266 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 12201440 is about 3493.0559686326. The cubic root of 12201440 is about 230.2168087942.

Adding to 12201440 its reverse (4410221), we get a palindrome (16611661).

The spelling of 12201440 in words is "twelve million, two hundred one thousand, four hundred forty".