100111209985 has 32 divisors (see below), whose sum is σ = 128819987712. Its totient is φ = 74422333440.

The previous prime is 100111209953. The next prime is 100111210009. The reversal of 100111209985 is 589902111001.

It is not a de Polignac number, because 100111209985 - 2⁵ = 100111209953 is a prime.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 2933470 + ... + 2967400.

It is an arithmetic number, because the mean of its divisors is an integer number (4025624616).

Almost surely, 2^100111209985 is an apocalyptic number.

It is an amenable number.

100111209985 is a deficient number, since it is larger than the sum of its proper divisors (28708777727).

100111209985 is a wasteful number, since it uses less digits than its factorization.

100111209985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34393.

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

The spelling of 100111209985 in words is "one hundred billion, one hundred eleven million, two hundred nine thousand, nine hundred eighty-five".