111155000001001 has 8 divisors (see below), whose sum is σ = 121265152172064. Its totient is φ = 101045706525120.

The previous prime is 111155000000983. The next prime is 111155000001007. The reversal of 111155000001001 is 100100000551111.

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 111155000001001 - 2²⁵ = 111154966446569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111155000001007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214403115 + ... + 214920928.

It is an arithmetic number, because the mean of its divisors is an integer number (15158144021508).

Almost surely, 2^{111155000001001} is an apocalyptic number.

111155000001001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111155000001001 is a deficient number, since it is larger than the sum of its proper divisors (10110152171063).

111155000001001 is a wasteful number, since it uses less digits than its factorization.

111155000001001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429347591.

The product of its (nonzero) digits is 25, while the sum is 16.

Adding to 111155000001001 its reverse (100100000551111), we get a palindrome (211255000552112).

The spelling of 111155000001001 in words is "one hundred eleven trillion, one hundred fifty-five billion, one thousand, one".