210021201011987 has 2 divisors, whose sum is σ = 210021201011988. Its totient is φ = 210021201011986.

The previous prime is 210021201011933. The next prime is 210021201012023. The reversal of 210021201011987 is 789110102120012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 210021201011987 - 2¹⁰ = 210021201010963 is a prime.

It is not a weakly prime, because it can be changed into another prime (210021201011927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105010600505993 + 105010600505994.

It is an arithmetic number, because the mean of its divisors is an integer number (105010600505994).

Almost surely, 2^{210021201011987} is an apocalyptic number.

210021201011987 is a deficient number, since it is larger than the sum of its proper divisors (1).

210021201011987 is an equidigital number, since it uses as much as digits as its factorization.

210021201011987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 35.

Adding to 210021201011987 its reverse (789110102120012), we get a palindrome (999131303131999).

The spelling of 210021201011987 in words is "two hundred ten trillion, twenty-one billion, two hundred one million, eleven thousand, nine hundred eighty-seven".