100100111111001 has 48 divisors (see below), whose sum is σ = 155517573032640. Its totient is φ = 61849513664640.

The previous prime is 100100111110997. The next prime is 100100111111027. The reversal of 100100111111001 is 100111111001001.

It is not a de Polignac number, because 100100111111001 - 2² = 100100111110997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (100100111111051) 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 47 ways as a sum of consecutive naturals, for example, 12770010 + ... + 19059731.

It is an arithmetic number, because the mean of its divisors is an integer number (3239949438180).

Almost surely, 2^{100100111111001} is an apocalyptic number.

It is an amenable number.

100100111111001 is a deficient number, since it is larger than the sum of its proper divisors (55417461921639).

100100111111001 is a wasteful number, since it uses less digits than its factorization.

100100111111001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31830166 (or 31830163 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 9.

Adding to 100100111111001 its reverse (100111111001001), we get a palindrome (200211222112002).

The spelling of 100100111111001 in words is "one hundred trillion, one hundred billion, one hundred eleven million, one hundred eleven thousand, one".