12021330 has 16 divisors (see below), whose sum is σ = 28851264. Its totient is φ = 3205680.

The previous prime is 12021311. The next prime is 12021353. The reversal of 12021330 is 3312021.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200326 + ... + 200385.

It is an arithmetic number, because the mean of its divisors is an integer number (1803204).

Almost surely, 2^12021330 is an apocalyptic number.

12021330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12021330 is an abundant number, since it is smaller than the sum of its proper divisors (16829934).

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

12021330 is a wasteful number, since it uses less digits than its factorization.

12021330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400721.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 12021330 is about 3467.1789685564. The cubic root of 12021330 is about 229.0784168559.

Adding to 12021330 its reverse (3312021), we get a palindrome (15333351).

The spelling of 12021330 in words is "twelve million, twenty-one thousand, three hundred thirty".