111111200001 has 12 divisors (see below), whose sum is σ = 160670140800. Its totient is φ = 73992817080.

The previous prime is 111111199957. The next prime is 111111200021. The reversal of 111111200001 is 100002111111.

It is not a de Polignac number, because 111111200001 - 2²¹ = 111109102849 is a prime.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (111111200021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6767701 + ... + 6784098.

It is an arithmetic number, because the mean of its divisors is an integer number (13389178400).

Almost surely, 2^111111200001 is an apocalyptic number.

It is an amenable number.

111111200001 is a deficient number, since it is larger than the sum of its proper divisors (49558940799).

111111200001 is a wasteful number, since it uses less digits than its factorization.

111111200001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13552716 (or 13552713 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 111111200001 its reverse (100002111111), we get a palindrome (211113311112).

The spelling of 111111200001 in words is "one hundred eleven billion, one hundred eleven million, two hundred thousand, one".