111818201 has 8 divisors (see below), whose sum is σ = 122078208. Its totient is φ = 101574000.

The previous prime is 111818191. The next prime is 111818227. The reversal of 111818201 is 102818111.

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

It is not a de Polignac number, because 111818201 - 2⁶ = 111818137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111818281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14696 + ... + 20966.

It is an arithmetic number, because the mean of its divisors is an integer number (15259776).

Almost surely, 2^111818201 is an apocalyptic number.

111818201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111818201 is a deficient number, since it is larger than the sum of its proper divisors (10260007).

111818201 is a wasteful number, since it uses less digits than its factorization.

111818201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7903.

The product of its (nonzero) digits is 128, while the sum is 23.

The square root of 111818201 is about 10574.4125605161. The cubic root of 111818201 is about 481.7675012024.

The spelling of 111818201 in words is "one hundred eleven million, eight hundred eighteen thousand, two hundred one".