20010200099987 has 2 divisors, whose sum is σ = 20010200099988. Its totient is φ = 20010200099986.

The previous prime is 20010200099963. The next prime is 20010200100013. The reversal of 20010200099987 is 78999000201002.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20010200099987 - 2⁸ = 20010200099731 is a prime.

It is not a weakly prime, because it can be changed into another prime (20010200099587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005100049993 + 10005100049994.

It is an arithmetic number, because the mean of its divisors is an integer number (10005100049994).

Almost surely, 2^{20010200099987} is an apocalyptic number.

20010200099987 is a deficient number, since it is larger than the sum of its proper divisors (1).

20010200099987 is an equidigital number, since it uses as much as digits as its factorization.

20010200099987 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 47.

The spelling of 20010200099987 in words is "twenty trillion, ten billion, two hundred million, ninety-nine thousand, nine hundred eighty-seven".