1021286668012 has 12 divisors (see below), whose sum is σ = 1924732566736. Its totient is φ = 471363077520.

The previous prime is 1021286667983. The next prime is 1021286668021. The reversal of 1021286668012 is 2108666821201.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1021286668012.

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, 9820064064 + ... + 9820064167.

Almost surely, 2^{1021286668012} is an apocalyptic number.

It is an amenable number.

1021286668012 is a deficient number, since it is larger than the sum of its proper divisors (903445898724).

1021286668012 is a wasteful number, since it uses less digits than its factorization.

1021286668012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19640128248 (or 19640128246 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 43.

The spelling of 1021286668012 in words is "one trillion, twenty-one billion, two hundred eighty-six million, six hundred sixty-eight thousand, twelve".