12020000021992 has 64 divisors (see below), whose sum is σ = 22645848456000. Its totient is φ = 5981188139520.

The previous prime is 12020000021989. The next prime is 12020000022067. The reversal of 12020000021992 is 29912000002021.

It is a self number, because there is not a number n which added to its sum of digits gives 12020000021992.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4749109767 + ... + 4749112297.

It is an arithmetic number, because the mean of its divisors is an integer number (353841382125).

Almost surely, 2^{12020000021992} is an apocalyptic number.

It is an amenable number.

12020000021992 is a deficient number, since it is larger than the sum of its proper divisors (10625848434008).

12020000021992 is a wasteful number, since it uses less digits than its factorization.

12020000021992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5506 (or 5502 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The spelling of 12020000021992 in words is "twelve trillion, twenty billion, twenty-one thousand, nine hundred ninety-two".