111133221 has 8 divisors (see below), whose sum is σ = 148226880. Its totient is φ = 74064192.

The previous prime is 111133219. The next prime is 111133259. The reversal of 111133221 is 122331111.

It is a happy number.

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

It is not a de Polignac number, because 111133221 - 2¹ = 111133219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111133221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111133271) 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, 12160 + ... + 19238.

It is an arithmetic number, because the mean of its divisors is an integer number (18528360).

Almost surely, 2^111133221 is an apocalyptic number.

It is an amenable number.

111133221 is a deficient number, since it is larger than the sum of its proper divisors (37093659).

111133221 is an equidigital number, since it uses as much as digits as its factorization.

111133221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12315.

The product of its digits is 36, while the sum is 15.

The square root of 111133221 is about 10541.9742458422. The cubic root of 111133221 is about 480.7817426320.

Adding to 111133221 its reverse (122331111), we get a palindrome (233464332).

The spelling of 111133221 in words is "one hundred eleven million, one hundred thirty-three thousand, two hundred twenty-one".