111201331120 has 80 divisors (see below), whose sum is σ = 286256821248. Its totient is φ = 39833291520.

The previous prime is 111201331099. The next prime is 111201331121. The reversal of 111201331120 is 21133102111.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 111201331094 and 111201331103.

It is not an unprimeable number, because it can be changed into a prime (111201331121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 884064 + ... + 1001983.

Almost surely, 2^111201331120 is an apocalyptic number.

111201331120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111201331120 is an abundant number, since it is smaller than the sum of its proper divisors (175055490128).

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

111201331120 is a wasteful number, since it uses less digits than its factorization.

111201331120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1886138 (or 1886132 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 111201331120 its reverse (21133102111), we get a palindrome (132334433231).

The spelling of 111201331120 in words is "one hundred eleven billion, two hundred one million, three hundred thirty-one thousand, one hundred twenty".