111605050001 has 8 divisors (see below), whose sum is σ = 111757509864. Its totient is φ = 111452696320.

The previous prime is 111605049977. The next prime is 111605050009. The reversal of 111605050001 is 100050506111.

It can be written as a sum of positive squares in 4 ways, for example, as 15926187601 + 95678862400 = 126199^2 + 309320^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111605050001 - 2²² = 111600855697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111605050009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2202911 + ... + 2253003.

It is an arithmetic number, because the mean of its divisors is an integer number (13969688733).

Almost surely, 2^111605050001 is an apocalyptic number.

It is an amenable number.

111605050001 is a deficient number, since it is larger than the sum of its proper divisors (152459863).

111605050001 is a wasteful number, since it uses less digits than its factorization.

111605050001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53091.

The product of its (nonzero) digits is 150, while the sum is 20.

Adding to 111605050001 its reverse (100050506111), we get a palindrome (211655556112).

The spelling of 111605050001 in words is "one hundred eleven billion, six hundred five million, fifty thousand, one".