111201131120 has 40 divisors (see below), whose sum is σ = 258767079216. Its totient is φ = 44441837568.

The previous prime is 111201131117. The next prime is 111201131123. The reversal of 111201131120 is 21131102111.

It is an interprime number because it is at equal distance from previous prime (111201131117) and next prime (111201131123).

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 111201131095 and 111201131104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111201131123) 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 7 ways as a sum of consecutive naturals, for example, 510542 + ... + 695021.

Almost surely, 2^111201131120 is an apocalyptic number.

111201131120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111201131120 is an abundant number, since it is smaller than the sum of its proper divisors (147565948096).

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

111201131120 is a wasteful number, since it uses less digits than its factorization.

111201131120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1206729 (or 1206723 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 111201131120 its reverse (21131102111), we get a palindrome (132332233231).

The spelling of 111201131120 in words is "one hundred eleven billion, two hundred one million, one hundred thirty-one thousand, one hundred twenty".