12021336566 has 8 divisors (see below), whose sum is σ = 18073650504. Its totient is φ = 5996786400.

The previous prime is 12021336557. The next prime is 12021336577. The reversal of 12021336566 is 66563312021.

12021336566 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6939860 + ... + 6941591.

It is an arithmetic number, because the mean of its divisors is an integer number (2259206313).

Almost surely, 2^12021336566 is an apocalyptic number.

12021336566 is a deficient number, since it is larger than the sum of its proper divisors (6052313938).

12021336566 is a wasteful number, since it uses less digits than its factorization.

12021336566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13881886.

The product of its (nonzero) digits is 38880, while the sum is 35.

Adding to 12021336566 its reverse (66563312021), we get a palindrome (78584648587).

The spelling of 12021336566 in words is "twelve billion, twenty-one million, three hundred thirty-six thousand, five hundred sixty-six".