111145201 has 8 divisors (see below), whose sum is σ = 119296584. Its totient is φ = 103173120.

The previous prime is 111145189. The next prime is 111145213. The reversal of 111145201 is 102541111.

It is an interprime number because it is at equal distance from previous prime (111145189) and next prime (111145213).

It can be written as a sum of positive squares in 4 ways, for example, as 18696976 + 92448225 = 4324^2 + 9615^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111145201 - 2⁵ = 111145169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111145901) 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, 43540 + ... + 46021.

It is an arithmetic number, because the mean of its divisors is an integer number (14912073).

Almost surely, 2^111145201 is an apocalyptic number.

It is an amenable number.

111145201 is a deficient number, since it is larger than the sum of its proper divisors (8151383).

111145201 is an equidigital number, since it uses as much as digits as its factorization.

111145201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89651.

The product of its (nonzero) digits is 40, while the sum is 16.

The square root of 111145201 is about 10542.5424352952. The cubic root of 111145201 is about 480.7990178694.

Adding to 111145201 its reverse (102541111), we get a palindrome (213686312).

The spelling of 111145201 in words is "one hundred eleven million, one hundred forty-five thousand, two hundred one".