111020110120 has 32 divisors (see below), whose sum is σ = 250011999720. Its totient is φ = 44369510400.

The previous prime is 111020110109. The next prime is 111020110181. The reversal of 111020110120 is 21011020111.

It can be written as a sum of positive squares in 4 ways, for example, as 110645377956 + 374732164 = 332634^2 + 19358^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 111020110097 and 111020110106.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1157481 + ... + 1249720.

Almost surely, 2^111020110120 is an apocalyptic number.

111020110120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111020110120 is an abundant number, since it is smaller than the sum of its proper divisors (138991889600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111020110120 is a wasteful number, since it uses less digits than its factorization.

111020110120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2408365 (or 2408361 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 111020110120 its reverse (21011020111), we get a palindrome (132031130231).

Subtracting from 111020110120 its reverse (21011020111), we obtain a palindrome (90009090009).

The spelling of 111020110120 in words is "one hundred eleven billion, twenty million, one hundred ten thousand, one hundred twenty".