12021683156 has 12 divisors (see below), whose sum is σ = 24043366368. Its totient is φ = 5152149912.

The previous prime is 12021683137. The next prime is 12021683203. The reversal of 12021683156 is 65138612021.

12021683156 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214672886 + ... + 214672941.

It is an arithmetic number, because the mean of its divisors is an integer number (2003613864).

Almost surely, 2^12021683156 is an apocalyptic number.

It is an amenable number.

12021683156 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12021683156 is a wasteful number, since it uses less digits than its factorization.

12021683156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429345838 (or 429345836 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The spelling of 12021683156 in words is "twelve billion, twenty-one million, six hundred eighty-three thousand, one hundred fifty-six".