12021066 has 12 divisors (see below), whose sum is σ = 26045682. Its totient is φ = 4007016.

The previous prime is 12021059. The next prime is 12021067. The reversal of 12021066 is 66012021.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11799225 + 221841 = 3435^2 + 471^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 667837 = 12021066 / (1 + 2 + 0 + 2 + 1 + 0 + 6 + 6).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12021067) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 333901 + ... + 333936.

Almost surely, 2^12021066 is an apocalyptic number.

12021066 is an abundant number, since it is smaller than the sum of its proper divisors (14024616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12021066 is a wasteful number, since it uses less digits than its factorization.

12021066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667845 (or 667842 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 12021066 is about 3467.1408970505. The cubic root of 12021066 is about 229.0767399159.

Adding to 12021066 its reverse (66012021), we get a palindrome (78033087).

The spelling of 12021066 in words is "twelve million, twenty-one thousand, sixty-six".