10002002120987 has 2 divisors, whose sum is σ = 10002002120988. Its totient is φ = 10002002120986.

The previous prime is 10002002120933. The next prime is 10002002121211. The reversal of 10002002120987 is 78902120020001.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10002002120987 - 2¹⁴ = 10002002104603 is a prime.

It is not a weakly prime, because it can be changed into another prime (10002002120927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5001001060493 + 5001001060494.

It is an arithmetic number, because the mean of its divisors is an integer number (5001001060494).

Almost surely, 2^{10002002120987} is an apocalyptic number.

10002002120987 is a deficient number, since it is larger than the sum of its proper divisors (1).

10002002120987 is an equidigital number, since it uses as much as digits as its factorization.

10002002120987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 32.

Adding to 10002002120987 its reverse (78902120020001), we get a palindrome (88904122140988).

The spelling of 10002002120987 in words is "ten trillion, two billion, two million, one hundred twenty thousand, nine hundred eighty-seven".