12227140 has 24 divisors (see below), whose sum is σ = 25768512. Its totient is φ = 4873440.

The previous prime is 12227081. The next prime is 12227167. The reversal of 12227140 is 4172221.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5697 + ... + 7543.

It is an arithmetic number, because the mean of its divisors is an integer number (1073688).

Almost surely, 2^12227140 is an apocalyptic number.

12227140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12227140 is an abundant number, since it is smaller than the sum of its proper divisors (13541372).

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

12227140 is a wasteful number, since it uses less digits than its factorization.

12227140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2187 (or 2185 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 12227140 is about 3496.7327607354. The cubic root of 12227140 is about 230.3783313357.

Adding to 12227140 its reverse (4172221), we get a palindrome (16399361).

The spelling of 12227140 in words is "twelve million, two hundred twenty-seven thousand, one hundred forty".