111221133 has 8 divisors (see below), whose sum is σ = 148343808. Its totient is φ = 74122944.

The previous prime is 111221101. The next prime is 111221141. The reversal of 111221133 is 331122111.

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 111221133 - 2⁵ = 111221101 is a prime.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111221153) 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, 13141 + ... + 19877.

It is an arithmetic number, because the mean of its divisors is an integer number (18542976).

Almost surely, 2^111221133 is an apocalyptic number.

It is an amenable number.

111221133 is a deficient number, since it is larger than the sum of its proper divisors (37122675).

111221133 is an equidigital number, since it uses as much as digits as its factorization.

111221133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12243.

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

The square root of 111221133 is about 10546.1430390451. The cubic root of 111221133 is about 480.9084834454.

Adding to 111221133 its reverse (331122111), we get a palindrome (442343244).

The spelling of 111221133 in words is "one hundred eleven million, two hundred twenty-one thousand, one hundred thirty-three".