111201120 has 96 divisors (see below), whose sum is σ = 389219040. Its totient is φ = 29652480.

The previous prime is 111201089. The next prime is 111201133. The reversal of 111201120 is 21102111.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8551 + ... + 17190.

It is an arithmetic number, because the mean of its divisors is an integer number (4054365).

Almost surely, 2^111201120 is an apocalyptic number.

111201120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111201120 is an abundant number, since it is smaller than the sum of its proper divisors (278017920).

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

111201120 is a wasteful number, since it uses less digits than its factorization.

111201120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25765 (or 25751 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 111201120 is about 10545.1941660645. The cubic root of 111201120 is about 480.8796370126.

Adding to 111201120 its reverse (21102111), we get a palindrome (132303231).

Subtracting from 111201120 its reverse (21102111), we obtain a palindrome (90099009).

The spelling of 111201120 in words is "one hundred eleven million, two hundred one thousand, one hundred twenty".