111111000011001 has 24 divisors (see below), whose sum is σ = 160568132131680. Its totient is φ = 74039638864896.

The previous prime is 111111000010979. The next prime is 111111000011003. The reversal of 111111000011001 is 100110000111111.

It is not a de Polignac number, because 111111000011001 - 2⁶ = 111111000010937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (111111000011003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 179493046 + ... + 180111008.

It is an arithmetic number, because the mean of its divisors is an integer number (6690338838820).

Almost surely, 2^{111111000011001} is an apocalyptic number.

It is an amenable number.

111111000011001 is a deficient number, since it is larger than the sum of its proper divisors (49457132120679).

111111000011001 is a wasteful number, since it uses less digits than its factorization.

111111000011001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627205 (or 627202 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 9.

Adding to 111111000011001 its reverse (100110000111111), we get a palindrome (211221000122112).

The spelling of 111111000011001 in words is "one hundred eleven trillion, one hundred eleven billion, eleven thousand, one".