1002120100987 has 2 divisors, whose sum is σ = 1002120100988. Its totient is φ = 1002120100986.

The previous prime is 1002120100981. The next prime is 1002120101023. The reversal of 1002120100987 is 7890010212001.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1002120100987 is a prime.

It is not a weakly prime, because it can be changed into another prime (1002120100981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501060050493 + 501060050494.

It is an arithmetic number, because the mean of its divisors is an integer number (501060050494).

Almost surely, 2^{1002120100987} is an apocalyptic number.

1002120100987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002120100987 is an equidigital number, since it uses as much as digits as its factorization.

1002120100987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 31.

Adding to 1002120100987 its reverse (7890010212001), we get a palindrome (8892130312988).

The spelling of 1002120100987 in words is "one trillion, two billion, one hundred twenty million, one hundred thousand, nine hundred eighty-seven".