111020120111101 has 16 divisors (see below), whose sum is σ = 118763903374704. Its totient is φ = 103411159547904.

The previous prime is 111020120111029. The next prime is 111020120111113. The reversal of 111020120111101 is 101111021020111.

It can be written as a sum of positive squares in 8 ways, for example, as 10881091822500 + 100139028288601 = 3298650^2 + 10006949^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111020120111101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111020120111141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171259881 + ... + 171906913.

It is an arithmetic number, because the mean of its divisors is an integer number (7422743960919).

Almost surely, 2^{111020120111101} is an apocalyptic number.

It is an amenable number.

111020120111101 is a deficient number, since it is larger than the sum of its proper divisors (7743783263603).

111020120111101 is a wasteful number, since it uses less digits than its factorization.

111020120111101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751200.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 111020120111101 its reverse (101111021020111), we get a palindrome (212131141131212).

The spelling of 111020120111101 in words is "one hundred eleven trillion, twenty billion, one hundred twenty million, one hundred eleven thousand, one hundred one".