111111010009 has 4 divisors (see below), whose sum is σ = 111113296180. Its totient is φ = 111108723840.

The previous prime is 111111009991. The next prime is 111111010033. The reversal of 111111010009 is 900010111111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 58880478409 + 52230531600 = 242653^2 + 228540^2 .

It is a cyclic number.

It is not a de Polignac number, because 111111010009 - 2¹¹ = 111111007961 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111111009974 and 111111010001.

It is not an unprimeable number, because it can be changed into a prime (111111010069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1068564 + ... + 1167925.

It is an arithmetic number, because the mean of its divisors is an integer number (27778324045).

Almost surely, 2^111111010009 is an apocalyptic number.

It is an amenable number.

111111010009 is a deficient number, since it is larger than the sum of its proper divisors (2286171).

111111010009 is an equidigital number, since it uses as much as digits as its factorization.

111111010009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2286170.

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

The spelling of 111111010009 in words is "one hundred eleven billion, one hundred eleven million, ten thousand, nine".