12021008 has 20 divisors (see below), whose sum is σ = 23344860. Its totient is φ = 5996544.

The previous prime is 12021007. The next prime is 12021013. The reversal of 12021008 is 80012021.

12021008 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 8456464 + 3564544 = 2908^2 + 1888^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12020983 and 12021001.

It is not an unprimeable number, because it can be changed into a prime (12021001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11816 + ... + 12792.

It is an arithmetic number, because the mean of its divisors is an integer number (1167243).

Almost surely, 2^12021008 is an apocalyptic number.

It is an amenable number.

12021008 is a deficient number, since it is larger than the sum of its proper divisors (11323852).

12021008 is an equidigital number, since it uses as much as digits as its factorization.

12021008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1754 (or 1748 counting only the distinct ones).

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

The square root of 12021008 is about 3467.1325328000. The cubic root of 12021008 is about 229.0763714940.

Adding to 12021008 its reverse (80012021), we get a palindrome (92033029).

The spelling of 12021008 in words is "twelve million, twenty-one thousand, eight".