111122230013 has 4 divisors (see below), whose sum is σ = 113832528348. Its totient is φ = 108411931680.

The previous prime is 111122229989. The next prime is 111122230019. The reversal of 111122230013 is 310032221111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 310032221111 = 157 ⋅1974727523.

It can be written as a sum of positive squares in 2 ways, for example, as 39468576889 + 71653653124 = 198667^2 + 267682^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111122230013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111122229973 and 111122230000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111122230019) 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, 1355149106 + ... + 1355149187.

It is an arithmetic number, because the mean of its divisors is an integer number (28458132087).

Almost surely, 2^111122230013 is an apocalyptic number.

It is an amenable number.

111122230013 is a deficient number, since it is larger than the sum of its proper divisors (2710298335).

111122230013 is an equidigital number, since it uses as much as digits as its factorization.

111122230013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2710298334.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 111122230013 its reverse (310032221111), we get a palindrome (421154451124).

The spelling of 111122230013 in words is "one hundred eleven billion, one hundred twenty-two million, two hundred thirty thousand, thirteen".