10021002221987 has 2 divisors, whose sum is σ = 10021002221988. Its totient is φ = 10021002221986.

The previous prime is 10021002221939. The next prime is 10021002222013. The reversal of 10021002221987 is 78912220012001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10021002221987 - 2¹⁰ = 10021002220963 is a prime.

It is not a weakly prime, because it can be changed into another prime (10021002221927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5010501110993 + 5010501110994.

It is an arithmetic number, because the mean of its divisors is an integer number (5010501110994).

Almost surely, 2^{10021002221987} is an apocalyptic number.

10021002221987 is a deficient number, since it is larger than the sum of its proper divisors (1).

10021002221987 is an equidigital number, since it uses as much as digits as its factorization.

10021002221987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 35.

Adding to 10021002221987 its reverse (78912220012001), we get a palindrome (88933222233988).

The spelling of 10021002221987 in words is "ten trillion, twenty-one billion, two million, two hundred twenty-one thousand, nine hundred eighty-seven".