111020110121 has 16 divisors (see below), whose sum is σ = 117796291200. Its totient is φ = 104271475968.

The previous prime is 111020110109. The next prime is 111020110181. The reversal of 111020110121 is 121011020111.

It is a cyclic number.

It is not a de Polignac number, because 111020110121 - 2⁶ = 111020110057 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (111020110181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18411335 + ... + 18417363.

It is an arithmetic number, because the mean of its divisors is an integer number (7362268200).

Almost surely, 2^111020110121 is an apocalyptic number.

It is an amenable number.

111020110121 is a deficient number, since it is larger than the sum of its proper divisors (6776181079).

111020110121 is a wasteful number, since it uses less digits than its factorization.

111020110121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8128.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 111020110121 its reverse (121011020111), we get a palindrome (232031130232).

The spelling of 111020110121 in words is "one hundred eleven billion, twenty million, one hundred ten thousand, one hundred twenty-one".