10211202101987 has 4 divisors (see below), whose sum is σ = 10211339588016. Its totient is φ = 10211064615960.

The previous prime is 10211202101981. The next prime is 10211202101999. The reversal of 10211202101987 is 78910120211201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10211202101987 - 2²⁰ = 10211201053411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10211202101981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68631548 + ... + 68780169.

It is an arithmetic number, because the mean of its divisors is an integer number (2552834897004).

Almost surely, 2^{10211202101987} is an apocalyptic number.

10211202101987 is a deficient number, since it is larger than the sum of its proper divisors (137486029).

10211202101987 is an equidigital number, since it uses as much as digits as its factorization.

10211202101987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137486028.

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

The spelling of 10211202101987 in words is "ten trillion, two hundred eleven billion, two hundred two million, one hundred one thousand, nine hundred eighty-seven".