1011100019999 has 6 divisors (see below), whose sum is σ = 1047167798040. Its totient is φ = 976234501256.

The previous prime is 1011100019983. The next prime is 1011100020019. The reversal of 1011100019999 is 9999100011101.

It is a happy number.

It is not a de Polignac number, because 1011100019999 - 2⁴ = 1011100019983 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 (1011100012999) 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 5 ways as a sum of consecutive naturals, for example, 601128779 + ... + 601130460.

It is an arithmetic number, because the mean of its divisors is an integer number (174527966340).

Almost surely, 2^{1011100019999} is an apocalyptic number.

1011100019999 is a deficient number, since it is larger than the sum of its proper divisors (36067778041).

1011100019999 is an equidigital number, since it uses as much as digits as its factorization.

1011100019999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1202259297 (or 1202259268 counting only the distinct ones).

The product of its (nonzero) digits is 6561, while the sum is 41.

The spelling of 1011100019999 in words is "one trillion, eleven billion, one hundred million, nineteen thousand, nine hundred ninety-nine".