111131100120 has 64 divisors (see below), whose sum is σ = 333971313120. Its totient is φ = 29583581184.

The previous prime is 111131100089. The next prime is 111131100121. The reversal of 111131100120 is 21001131111.

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 = 111131100096 and 111131100105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111131100121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 733267 + ... + 871746.

Almost surely, 2^111131100120 is an apocalyptic number.

111131100120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111131100120 is an abundant number, since it is smaller than the sum of its proper divisors (222840213000).

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

111131100120 is a wasteful number, since it uses less digits than its factorization.

111131100120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1605604 (or 1605600 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 12.

Adding to 111131100120 its reverse (21001131111), we get a palindrome (132132231231).

The spelling of 111131100120 in words is "one hundred eleven billion, one hundred thirty-one million, one hundred thousand, one hundred twenty".