111228385 has 8 divisors (see below), whose sum is σ = 133543296. Its totient is φ = 88936560.

The previous prime is 111228379. The next prime is 111228389. The reversal of 111228385 is 583822111.

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

It is not a de Polignac number, because 111228385 - 2⁵ = 111228353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111228389) 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 7 ways as a sum of consecutive naturals, for example, 7690 + ... + 16780.

It is an arithmetic number, because the mean of its divisors is an integer number (16692912).

Almost surely, 2^111228385 is an apocalyptic number.

It is an amenable number.

111228385 is a deficient number, since it is larger than the sum of its proper divisors (22314911).

111228385 is an equidigital number, since it uses as much as digits as its factorization.

111228385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11543.

The product of its digits is 3840, while the sum is 31.

The square root of 111228385 is about 10546.4868558208. The cubic root of 111228385 is about 480.9189355134.

The spelling of 111228385 in words is "one hundred eleven million, two hundred twenty-eight thousand, three hundred eighty-five".