111111011010001 has 8 divisors (see below), whose sum is σ = 112434203818944. Its totient is φ = 109792192393200.

The previous prime is 111111011009951. The next prime is 111111011010089. The reversal of 111111011010001 is 100010110111111.

It is a happy number.

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 111111011010001 - 2³³ = 111102421075409 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111111011010001.

It is not an unprimeable number, because it can be changed into a prime (111111011017001) 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, 1093496931 + ... + 1093598536.

It is an arithmetic number, because the mean of its divisors is an integer number (14054275477368).

Almost surely, 2^{111111011010001} is an apocalyptic number.

It is an amenable number.

111111011010001 is a deficient number, since it is larger than the sum of its proper divisors (1323192808943).

111111011010001 is a wasteful number, since it uses less digits than its factorization.

111111011010001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2187096071.

The product of its (nonzero) digits is 1, while the sum is 10.

Adding to 111111011010001 its reverse (100010110111111), we get a palindrome (211121121121112).

The spelling of 111111011010001 in words is "one hundred eleven trillion, one hundred eleven billion, eleven million, ten thousand, one".