111021001000109 has 16 divisors (see below), whose sum is σ = 116083071457920. Its totient is φ = 105978737356800.

The previous prime is 111021001000097. The next prime is 111021001000123. The reversal of 111021001000109 is 901000100120111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 111021001000109 - 2¹² = 111021000996013 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 (111021001000159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19984829 + ... + 24928605.

It is an arithmetic number, because the mean of its divisors is an integer number (7255191966120).

Almost surely, 2^{111021001000109} is an apocalyptic number.

It is an amenable number.

111021001000109 is a deficient number, since it is larger than the sum of its proper divisors (5062070457811).

111021001000109 is a wasteful number, since it uses less digits than its factorization.

111021001000109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4945780.

The product of its (nonzero) digits is 18, while the sum is 17.

The spelling of 111021001000109 in words is "one hundred eleven trillion, twenty-one billion, one million, one hundred nine", and thus it is an aban number.