111112001 has 24 divisors (see below), whose sum is σ = 150330432. Its totient is φ = 79912800.

The previous prime is 111111989. The next prime is 111112003. The reversal of 111112001 is 100211111.

It is a happy number.

It is not a de Polignac number, because 111112001 - 2²² = 106917697 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 111112001.

It is not an unprimeable number, because it can be changed into a prime (111112003) 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, 5966 + ... + 16056.

It is an arithmetic number, because the mean of its divisors is an integer number (6263768).

Almost surely, 2^111112001 is an apocalyptic number.

111112001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111112001 is a deficient number, since it is larger than the sum of its proper divisors (39218431).

111112001 is a wasteful number, since it uses less digits than its factorization.

111112001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10133 (or 10122 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 8.

The square root of 111112001 is about 10540.9677449464. The cubic root of 111112001 is about 480.7511402076.

Adding to 111112001 its reverse (100211111), we get a palindrome (211323112).

The spelling of 111112001 in words is "one hundred eleven million, one hundred twelve thousand, one".