1010001009999 has 4 divisors (see below), whose sum is σ = 1346668013336. Its totient is φ = 673334006664.

The previous prime is 1010001009991. The next prime is 1010001010001. The reversal of 1010001009999 is 9999001000101.

1010001009999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 1010001009999 - 2³ = 1010001009991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010001009991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168333501664 + ... + 168333501669.

It is an arithmetic number, because the mean of its divisors is an integer number (336667003334).

Almost surely, 2^{1010001009999} is an apocalyptic number.

1010001009999 is a deficient number, since it is larger than the sum of its proper divisors (336667003337).

1010001009999 is an equidigital number, since it uses as much as digits as its factorization.

1010001009999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336667003336.

The product of its (nonzero) digits is 6561, while the sum is 39.

The spelling of 1010001009999 in words is "one trillion, ten billion, one million, nine thousand, nine hundred ninety-nine".