111201201 has 16 divisors (see below), whose sum is σ = 168249600. Its totient is φ = 72555984.

The previous prime is 111201197. The next prime is 111201217. The reversal of 111201201 is 102102111.

It is a happy number.

It is not a de Polignac number, because 111201201 - 2² = 111201197 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (111201221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42546 + ... + 45083.

It is an arithmetic number, because the mean of its divisors is an integer number (10515600).

Almost surely, 2^111201201 is an apocalyptic number.

It is an amenable number.

111201201 is a deficient number, since it is larger than the sum of its proper divisors (57048399).

111201201 is an equidigital number, since it uses as much as digits as its factorization.

111201201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87685 (or 87679 counting only the distinct ones).

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

The square root of 111201201 is about 10545.1980066758. The cubic root of 111201201 is about 480.8797537718.

Adding to 111201201 its reverse (102102111), we get a palindrome (213303312).

It can be divided in two parts, 11120 and 1201, that added together give a palindrome (12321).

The spelling of 111201201 in words is "one hundred eleven million, two hundred one thousand, two hundred one".