111101111121001 has 8 divisors (see below), whose sum is σ = 111219356757600. Its totient is φ = 110982895544160.

The previous prime is 111101111120977. The next prime is 111101111121031. The reversal of 111101111121001 is 100121111101111.

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 111101111121001 - 2⁵ = 111101111120969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111101111121031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115116 + ... + 14906893.

It is an arithmetic number, because the mean of its divisors is an integer number (13902419594700).

Almost surely, 2^{111101111121001} is an apocalyptic number.

It is an amenable number.

111101111121001 is a deficient number, since it is larger than the sum of its proper divisors (118245636599).

111101111121001 is a wasteful number, since it uses less digits than its factorization.

111101111121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15029879.

The product of its (nonzero) digits is 2, while the sum is 13.

Adding to 111101111121001 its reverse (100121111101111), we get a palindrome (211222222222112).

The spelling of 111101111121001 in words is "one hundred eleven trillion, one hundred one billion, one hundred eleven million, one hundred twenty-one thousand, one".