12001072 has 20 divisors (see below), whose sum is σ = 23648040. Its totient is φ = 5898368.

The previous prime is 12001057. The next prime is 12001081. The reversal of 12001072 is 27010021.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 5413 + ... + 7300.

It is an arithmetic number, because the mean of its divisors is an integer number (1182402).

Almost surely, 2^12001072 is an apocalyptic number.

It is an amenable number.

12001072 is a deficient number, since it is larger than the sum of its proper divisors (11646968).

12001072 is a wasteful number, since it uses less digits than its factorization.

12001072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12780 (or 12774 counting only the distinct ones).

The product of its (nonzero) digits is 28, while the sum is 13.

The square root of 12001072 is about 3464.2563415544. The cubic root of 12001072 is about 228.9496657169.

Adding to 12001072 its reverse (27010021), we get a palindrome (39011093).

The spelling of 12001072 in words is "twelve million, one thousand, seventy-two".