111100000001 has 4 divisors (see below), whose sum is σ = 111103635972. Its totient is φ = 111096364032.

The previous prime is 111099999979. The next prime is 111100000003. The reversal of 111100000001 is 100000001111.

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 14269497025 + 96830502976 = 119455^2 + 311176^2 .

It is a cyclic number.

It is not a de Polignac number, because 111100000001 - 2³⁴ = 93920130817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111100000003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1771760 + ... + 1833393.

It is an arithmetic number, because the mean of its divisors is an integer number (27775908993).

Almost surely, 2^111100000001 is an apocalyptic number.

It is an amenable number.

111100000001 is a deficient number, since it is larger than the sum of its proper divisors (3635971).

111100000001 is an equidigital number, since it uses as much as digits as its factorization.

111100000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3635970.

The product of its (nonzero) digits is 1, while the sum is 5.

Adding to 111100000001 its reverse (100000001111), we get a palindrome (211100001112).

It can be divided in two parts, 111 and 100000001, that multiplied together give a palindrome (11100000111).

The spelling of 111100000001 in words is "one hundred eleven billion, one hundred million, one", and thus it is an aban number.