12011144 has 32 divisors (see below), whose sum is σ = 23183040. Its totient is φ = 5832000.

The previous prime is 12011143. The next prime is 12011149. The reversal of 12011144 is 44111021.

It is not an unprimeable number, because it can be changed into a prime (12011143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73607 + ... + 73769.

It is an arithmetic number, because the mean of its divisors is an integer number (724470).

Almost surely, 2^12011144 is an apocalyptic number.

It is an amenable number.

12011144 is a deficient number, since it is larger than the sum of its proper divisors (11171896).

12011144 is a wasteful number, since it uses less digits than its factorization.

12011144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381 (or 377 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 12011144 is about 3465.7097397214. The cubic root of 12011144 is about 229.0136971143.

Adding to 12011144 its reverse (44111021), we get a palindrome (56122165).

The spelling of 12011144 in words is "twelve million, eleven thousand, one hundred forty-four".