111110000001001 has 4 divisors (see below), whose sum is σ = 111112722458692. Its totient is φ = 111107277543312.

The previous prime is 111110000000999. The next prime is 111110000001023. The reversal of 111110000001001 is 100100000011111.

It is a happy number.

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 100550756250000 + 10559243751001 = 10027500^2 + 3249499^2 .

It is a cyclic number.

It is not a de Polignac number, because 111110000001001 - 2¹ = 111110000000999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111110000008001) 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, 1361167626 + ... + 1361249251.

It is an arithmetic number, because the mean of its divisors is an integer number (27778180614673).

Almost surely, 2^{111110000001001} is an apocalyptic number.

It is an amenable number.

111110000001001 is a deficient number, since it is larger than the sum of its proper divisors (2722457691).

111110000001001 is an equidigital number, since it uses as much as digits as its factorization.

111110000001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2722457690.

The product of its (nonzero) digits is 1, while the sum is 7.

Adding to 111110000001001 its reverse (100100000011111), we get a palindrome (211210000012112).

The spelling of 111110000001001 in words is "one hundred eleven trillion, one hundred ten billion, one thousand, one".