111222313 has 4 divisors (see below), whose sum is σ = 117764820. Its totient is φ = 104679808.

The previous prime is 111222301. The next prime is 111222341. The reversal of 111222313 is 313222111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37124649 + 74097664 = 6093^2 + 8608^2 .

It is a cyclic number.

It is not a de Polignac number, because 111222313 - 2¹³ = 111214121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111222343) 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, 3271228 + ... + 3271261.

It is an arithmetic number, because the mean of its divisors is an integer number (29441205).

Almost surely, 2^111222313 is an apocalyptic number.

It is an amenable number.

111222313 is a deficient number, since it is larger than the sum of its proper divisors (6542507).

111222313 is an equidigital number, since it uses as much as digits as its factorization.

111222313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6542506.

The product of its digits is 72, while the sum is 16.

The square root of 111222313 is about 10546.1989835201. The cubic root of 111222313 is about 480.9101841714.

Adding to 111222313 its reverse (313222111), we get a palindrome (424444424).

The spelling of 111222313 in words is "one hundred eleven million, two hundred twenty-two thousand, three hundred thirteen".