10101001009999 has 2 divisors, whose sum is σ = 10101001010000. Its totient is φ = 10101001009998.

The previous prime is 10101001009943. The next prime is 10101001010027. The reversal of 10101001009999 is 99990010010101.

It is a strong prime.

It is an emirp because it is prime and its reverse (99990010010101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10101001009999 - 2⁷ = 10101001009871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10101001000999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5050500504999 + 5050500505000.

It is an arithmetic number, because the mean of its divisors is an integer number (5050500505000).

Almost surely, 2^{10101001009999} is an apocalyptic number.

10101001009999 is a deficient number, since it is larger than the sum of its proper divisors (1).

10101001009999 is an equidigital number, since it uses as much as digits as its factorization.

10101001009999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6561, while the sum is 40.

The spelling of 10101001009999 in words is "ten trillion, one hundred one billion, one million, nine thousand, nine hundred ninety-nine".