2012021992 has 8 divisors (see below), whose sum is σ = 3772541250. Its totient is φ = 1006010992.

The previous prime is 2012021989. The next prime is 2012022017. The reversal of 2012021992 is 2991202102.

It can be written as a sum of positive squares in only one way, i.e., 1762824196 + 249197796 = 41986^2 + 15786^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 2012021992.

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 as a sum of consecutive naturals, namely, 125751367 + ... + 125751382.

Almost surely, 2^2012021992 is an apocalyptic number.

It is an amenable number.

2012021992 is a deficient number, since it is larger than the sum of its proper divisors (1760519258).

2012021992 is a wasteful number, since it uses less digits than its factorization.

2012021992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251502755 (or 251502751 counting only the distinct ones).

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

The square root of 2012021992 is about 44855.5681270453. The cubic root of 2012021992 is about 1262.4404686761.

The spelling of 2012021992 in words is "two billion, twelve million, twenty-one thousand, nine hundred ninety-two".