12011240 has 32 divisors (see below), whose sum is σ = 27125280. Its totient is φ = 4786752.

The previous prime is 12011227. The next prime is 12011243. The reversal of 12011240 is 4211021.

It is not an unprimeable number, because it can be changed into a prime (12011243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18359 + ... + 19001.

It is an arithmetic number, because the mean of its divisors is an integer number (847665).

Almost surely, 2^12011240 is an apocalyptic number.

12011240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12011240 is an abundant number, since it is smaller than the sum of its proper divisors (15114040).

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

12011240 is a wasteful number, since it uses less digits than its factorization.

12011240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121 (or 1117 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 12011240 is about 3465.7235896707. The cubic root of 12011240 is about 229.0143072492.

Adding to 12011240 its reverse (4211021), we get a palindrome (16222261).

The spelling of 12011240 in words is "twelve million, eleven thousand, two hundred forty".