111100010010109 has 16 divisors (see below), whose sum is σ = 119086970430960. Its totient is φ = 103639363322880.

The previous prime is 111100010010107. The next prime is 111100010010179. The reversal of 111100010010109 is 901010010001111.

It can be written as a sum of positive squares in 8 ways, for example, as 4983846397209 + 106116163612900 = 2232453^2 + 10301270^2 .

It is not a de Polignac number, because 111100010010109 - 2¹ = 111100010010107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111100010010092 and 111100010010101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111100010010107) 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, 99504462 + ... + 100614799.

It is an arithmetic number, because the mean of its divisors is an integer number (7442935651935).

Almost surely, 2^{111100010010109} is an apocalyptic number.

It is an amenable number.

111100010010109 is a deficient number, since it is larger than the sum of its proper divisors (7986960420851).

111100010010109 is an equidigital number, since it uses as much as digits as its factorization.

111100010010109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200119425 (or 200119391 counting only the distinct ones).

The product of its (nonzero) digits is 9, while the sum is 16.

The spelling of 111100010010109 in words is "one hundred eleven trillion, one hundred billion, ten million, ten thousand, one hundred nine".