1000002100087 has 2 divisors, whose sum is σ = 1000002100088. Its totient is φ = 1000002100086.

The previous prime is 1000002100081. The next prime is 1000002100127. The reversal of 1000002100087 is 7800012000001.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000002100087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1000002100081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500001050043 + 500001050044.

It is an arithmetic number, because the mean of its divisors is an integer number (500001050044).

Almost surely, 2^{1000002100087} is an apocalyptic number.

1000002100087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000002100087 is an equidigital number, since it uses as much as digits as its factorization.

1000002100087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 19.

Adding to 1000002100087 its reverse (7800012000001), we get a palindrome (8800014100088).

The spelling of 1000002100087 in words is "one trillion, two million, one hundred thousand, eighty-seven".