1001002111999 has 8 divisors (see below), whose sum is σ = 1003392664560. Its totient is φ = 998613926016.

The previous prime is 1001002111951. The next prime is 1001002112137. The reversal of 1001002111999 is 9991112001001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1001002111999 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 (1001002111099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256764 + ... + 1438030.

It is an arithmetic number, because the mean of its divisors is an integer number (125424083070).

Almost surely, 2^{1001002111999} is an apocalyptic number.

1001002111999 is a deficient number, since it is larger than the sum of its proper divisors (2390552561).

1001002111999 is a wasteful number, since it uses less digits than its factorization.

1001002111999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1183289.

The product of its (nonzero) digits is 1458, while the sum is 34.

The spelling of 1001002111999 in words is "one trillion, one billion, two million, one hundred eleven thousand, nine hundred ninety-nine".