111222013 has 12 divisors (see below), whose sum is σ = 130375872. Its totient is φ = 94599960.

The previous prime is 111222011. The next prime is 111222019. The reversal of 111222013 is 310222111.

It is not a de Polignac number, because 111222013 - 2¹ = 111222011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111221984 and 111222002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111222011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2245 + ... + 15082.

It is an arithmetic number, because the mean of its divisors is an integer number (10864656).

Almost surely, 2^111222013 is an apocalyptic number.

It is an amenable number.

111222013 is a deficient number, since it is larger than the sum of its proper divisors (19153859).

111222013 is a wasteful number, since it uses less digits than its factorization.

111222013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17472 (or 17465 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 111222013 is about 10546.1847603766. The cubic root of 111222013 is about 480.9097517845.

Adding to 111222013 its reverse (310222111), we get a palindrome (421444124).

The spelling of 111222013 in words is "one hundred eleven million, two hundred twenty-two thousand, thirteen".