111001115601 has 12 divisors (see below), whose sum is σ = 168773626320. Its totient is φ = 70105967640.

The previous prime is 111001115597. The next prime is 111001115611. The reversal of 111001115601 is 106511100111.

It is a happy number.

111001115601 is a `hidden beast` number, since 1 + 1 + 100 + 1 + 1 + 1 + 560 + 1 = 666.

It is not a de Polignac number, because 111001115601 - 2² = 111001115597 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111001115611) 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, 324564495 + ... + 324564836.

It is an arithmetic number, because the mean of its divisors is an integer number (14064468860).

Almost surely, 2^111001115601 is an apocalyptic number.

It is an amenable number.

111001115601 is a deficient number, since it is larger than the sum of its proper divisors (57772510719).

111001115601 is a wasteful number, since it uses less digits than its factorization.

111001115601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649129356 (or 649129353 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 18.

Adding to 111001115601 its reverse (106511100111), we get a palindrome (217512215712).

The spelling of 111001115601 in words is "one hundred eleven billion, one million, one hundred fifteen thousand, six hundred one".