12001004 has 6 divisors (see below), whose sum is σ = 21001764. Its totient is φ = 6000500.

The previous prime is 12001001. The next prime is 12001021. The reversal of 12001004 is 40010021.

It is a junction number, because it is equal to n+sod(n) for n = 12000982 and 12001000.

It is not an unprimeable number, because it can be changed into a prime (12001001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1500122 + ... + 1500129.

It is an arithmetic number, because the mean of its divisors is an integer number (3500294).

Almost surely, 2^12001004 is an apocalyptic number.

It is an amenable number.

12001004 is a deficient number, since it is larger than the sum of its proper divisors (9000760).

12001004 is a wasteful number, since it uses less digits than its factorization.

12001004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3000255 (or 3000253 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 12001004 is about 3464.2465270243. The cubic root of 12001004 is about 228.9492332943.

Adding to 12001004 its reverse (40010021), we get a palindrome (52011025).

The spelling of 12001004 in words is "twelve million, one thousand, four".