12021028 has 12 divisors (see below), whose sum is σ = 21075712. Its totient is φ = 5999400.

The previous prime is 12021017. The next prime is 12021029. The reversal of 12021028 is 82012021.

It is a super-2 number, since 2×12021028² = 289010228353568, which contains 22 as substring.

It is a zygodrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (12021029) by changing a digit.

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, 48 + ... + 4903.

Almost surely, 2^12021028 is an apocalyptic number.

It is an amenable number.

12021028 is a deficient number, since it is larger than the sum of its proper divisors (9054684).

12021028 is a wasteful number, since it uses less digits than its factorization.

12021028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5562 (or 5560 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 12021028 is about 3467.1354170266. The cubic root of 12021028 is about 229.0764985362.

Adding to 12021028 its reverse (82012021), we get a palindrome (94033049).

The spelling of 12021028 in words is "twelve million, twenty-one thousand, twenty-eight".