111111000000001 has 8 divisors (see below), whose sum is σ = 111173129812800. Its totient is φ = 111048886965360.

The previous prime is 111110999999977. The next prime is 111111000000031. The reversal of 111111000000001 is 100000000111111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111111000000001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111111000000031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9065595 + ... + 17447263.

It is an arithmetic number, because the mean of its divisors is an integer number (13896641226600).

Almost surely, 2^{111111000000001} is an apocalyptic number.

It is an amenable number.

111111000000001 is a deficient number, since it is larger than the sum of its proper divisors (62129812799).

111111000000001 is an equidigital number, since it uses as much as digits as its factorization.

111111000000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8389079.

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

Adding to 111111000000001 its reverse (100000000111111), we get a palindrome (211111000111112).

It can be divided in two parts, 11111 and 1000000001, that multiplied together give a palindrome (11111000011111).

The spelling of 111111000000001 in words is "one hundred eleven trillion, one hundred eleven billion, one", and thus it is an aban number.