10002012199987 has 2 divisors, whose sum is σ = 10002012199988. Its totient is φ = 10002012199986.

The previous prime is 10002012199981. The next prime is 10002012200017. The reversal of 10002012199987 is 78999121020001.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10002012199987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10002012199987.

It is not a weakly prime, because it can be changed into another prime (10002012199981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5001006099993 + 5001006099994.

It is an arithmetic number, because the mean of its divisors is an integer number (5001006099994).

Almost surely, 2^{10002012199987} is an apocalyptic number.

10002012199987 is a deficient number, since it is larger than the sum of its proper divisors (1).

10002012199987 is an equidigital number, since it uses as much as digits as its factorization.

10002012199987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 49.

The spelling of 10002012199987 in words is "ten trillion, two billion, twelve million, one hundred ninety-nine thousand, nine hundred eighty-seven".