2012021021986 has 8 divisors (see below), whose sum is σ = 3030554486124. Its totient is φ = 1001836193280.

The previous prime is 2012021021977. The next prime is 2012021021993. The reversal of 2012021021986 is 6891201202102.

It can be written as a sum of positive squares in 2 ways, for example, as 1941198506361 + 70822515625 = 1393269^2 + 266125^2 .

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

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, 2087158255 + ... + 2087159218.

Almost surely, 2^{2012021021986} is an apocalyptic number.

2012021021986 is a deficient number, since it is larger than the sum of its proper divisors (1018533464138).

2012021021986 is a wasteful number, since it uses less digits than its factorization.

2012021021986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4174317716.

The product of its (nonzero) digits is 6912, while the sum is 34.

The spelling of 2012021021986 in words is "two trillion, twelve billion, twenty-one million, twenty-one thousand, nine hundred eighty-six".