2101002209987 has 2 divisors, whose sum is σ = 2101002209988. Its totient is φ = 2101002209986.

The previous prime is 2101002209941. The next prime is 2101002210029. The reversal of 2101002209987 is 7899022001012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2101002209987 - 2²⁶ = 2100935101123 is a prime.

It is not a weakly prime, because it can be changed into another prime (2101002209387) 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 as a sum of consecutive naturals, namely, 1050501104993 + 1050501104994.

It is an arithmetic number, because the mean of its divisors is an integer number (1050501104994).

Almost surely, 2^{2101002209987} is an apocalyptic number.

2101002209987 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101002209987 is an equidigital number, since it uses as much as digits as its factorization.

2101002209987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 41.

The spelling of 2101002209987 in words is "two trillion, one hundred one billion, two million, two hundred nine thousand, nine hundred eighty-seven".