111213133 has 8 divisors (see below), whose sum is σ = 119977848. Its totient is φ = 102695424.

The previous prime is 111213103. The next prime is 111213143. The reversal of 111213133 is 331312111.

It can be written as a sum of positive squares in 4 ways, for example, as 48692484 + 62520649 = 6978^2 + 7907^2 .

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 111213133 - 2⁵ = 111213101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111213103) 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, 60816 + ... + 62617.

It is an arithmetic number, because the mean of its divisors is an integer number (14997231).

Almost surely, 2^111213133 is an apocalyptic number.

It is an amenable number.

111213133 is a deficient number, since it is larger than the sum of its proper divisors (8764715).

111213133 is a wasteful number, since it uses less digits than its factorization.

111213133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123503.

The product of its digits is 54, while the sum is 16.

The square root of 111213133 is about 10545.7637466425. The cubic root of 111213133 is about 480.8969527827.

Adding to 111213133 its reverse (331312111), we get a palindrome (442525244).

The spelling of 111213133 in words is "one hundred eleven million, two hundred thirteen thousand, one hundred thirty-three".