1001012109985 has 48 divisors (see below), whose sum is σ = 1274509347840. Its totient is φ = 753847516800.

The previous prime is 1001012109983. The next prime is 1001012109989. The reversal of 1001012109985 is 5899012101001.

It is not a de Polignac number, because 1001012109985 - 2¹ = 1001012109983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1001012109983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 162736660 + ... + 162742810.

It is an arithmetic number, because the mean of its divisors is an integer number (26552278080).

Almost surely, 2^{1001012109985} is an apocalyptic number.

It is an amenable number.

1001012109985 is a deficient number, since it is larger than the sum of its proper divisors (273497237855).

1001012109985 is an equidigital number, since it uses as much as digits as its factorization.

1001012109985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6878 (or 6835 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 37.

The spelling of 1001012109985 in words is "one trillion, one billion, twelve million, one hundred nine thousand, nine hundred eighty-five".