111011012100120 has 64 divisors (see below), whose sum is σ = 363308766877440. Its totient is φ = 26911760508800.

The previous prime is 111011012100089. The next prime is 111011012100143. The reversal of 111011012100120 is 21001210110111.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 111011012100096 and 111011012100105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42049624476 + ... + 42049627115.

It is an arithmetic number, because the mean of its divisors is an integer number (5676699482460).

Almost surely, 2^{111011012100120} is an apocalyptic number.

111011012100120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111011012100120 is an abundant number, since it is smaller than the sum of its proper divisors (252297754777320).

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

111011012100120 is a wasteful number, since it uses less digits than its factorization.

111011012100120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84099251616 (or 84099251612 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 111011012100120 its reverse (21001210110111), we get a palindrome (132012222210231).

The spelling of 111011012100120 in words is "one hundred eleven trillion, eleven billion, twelve million, one hundred thousand, one hundred twenty".