111133213 has 4 divisors (see below), whose sum is σ = 111215068. Its totient is φ = 111051360.

The previous prime is 111133193. The next prime is 111133219. The reversal of 111133213 is 312331111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 312331111 = 7789 ⋅40099.

It can be written as a sum of positive squares in 2 ways, for example, as 59552089 + 51581124 = 7717^2 + 7182^2 .

It is a cyclic number.

It is not a de Polignac number, because 111133213 - 2⁵ = 111133181 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 (111133219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38856 + ... + 41617.

It is an arithmetic number, because the mean of its divisors is an integer number (27803767).

Almost surely, 2^111133213 is an apocalyptic number.

It is an amenable number.

111133213 is a deficient number, since it is larger than the sum of its proper divisors (81855).

111133213 is an equidigital number, since it uses as much as digits as its factorization.

111133213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81854.

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

The square root of 111133213 is about 10541.9738664066. The cubic root of 111133213 is about 480.7817310955.

Adding to 111133213 its reverse (312331111), we get a palindrome (423464324).

The spelling of 111133213 in words is "one hundred eleven million, one hundred thirty-three thousand, two hundred thirteen".