12001144 has 8 divisors (see below), whose sum is σ = 22502160. Its totient is φ = 6000568.

The previous prime is 12001139. The next prime is 12001153. The reversal of 12001144 is 44110021.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 750064 + ... + 750079.

It is an arithmetic number, because the mean of its divisors is an integer number (2812770).

Almost surely, 2^12001144 is an apocalyptic number.

It is an amenable number.

12001144 is a deficient number, since it is larger than the sum of its proper divisors (10501016).

12001144 is a wasteful number, since it uses less digits than its factorization.

12001144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1500149 (or 1500145 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 12001144 is about 3464.2667333795. The cubic root of 12001144 is about 228.9501235744.

Adding to 12001144 its reverse (44110021), we get a palindrome (56111165).

The spelling of 12001144 in words is "twelve million, one thousand, one hundred forty-four".