12021659976 has 32 divisors (see below), whose sum is σ = 30056896800. Its totient is φ = 4006853760.

The previous prime is 12021659957. The next prime is 12021659977. The reversal of 12021659976 is 67995612021.

12021659976 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12021659977) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 420291 + ... + 447981.

It is an arithmetic number, because the mean of its divisors is an integer number (939278025).

Almost surely, 2^12021659976 is an apocalyptic number.

It is an amenable number.

12021659976 is an abundant number, since it is smaller than the sum of its proper divisors (18035236824).

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

12021659976 is a wasteful number, since it uses less digits than its factorization.

12021659976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45789 (or 45785 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 48.

The spelling of 12021659976 in words is "twelve billion, twenty-one million, six hundred fifty-nine thousand, nine hundred seventy-six".