1001111019999 has 32 divisors (see below), whose sum is σ = 1358495539200. Its totient is φ = 655675316352.

The previous prime is 1001111019943. The next prime is 1001111020009. The reversal of 1001111019999 is 9999101111001.

It is not a de Polignac number, because 1001111019999 - 2⁷ = 1001111019871 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1001111019999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001111069999) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 132611277 + ... + 132618825.

It is an arithmetic number, because the mean of its divisors is an integer number (42452985600).

Almost surely, 2^{1001111019999} is an apocalyptic number.

1001111019999 is a deficient number, since it is larger than the sum of its proper divisors (357384519201).

1001111019999 is a wasteful number, since it uses less digits than its factorization.

1001111019999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11039.

The product of its (nonzero) digits is 6561, while the sum is 42.

The spelling of 1001111019999 in words is "one trillion, one billion, one hundred eleven million, nineteen thousand, nine hundred ninety-nine".