111310220113 has 4 divisors (see below), whose sum is σ = 111311062180. Its totient is φ = 111309378048.

The previous prime is 111310220071. The next prime is 111310220167. The reversal of 111310220113 is 311022013111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 311022013111 = 199 ⋅1562924689.

It can be written as a sum of positive squares in 2 ways, for example, as 26382855184 + 84927364929 = 162428^2 + 291423^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111310220113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111310229113) 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, 174720 + ... + 503137.

It is an arithmetic number, because the mean of its divisors is an integer number (27827765545).

Almost surely, 2^111310220113 is an apocalyptic number.

It is an amenable number.

111310220113 is a deficient number, since it is larger than the sum of its proper divisors (842067).

111310220113 is an equidigital number, since it uses as much as digits as its factorization.

111310220113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842066.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 111310220113 its reverse (311022013111), we get a palindrome (422332233224).

The spelling of 111310220113 in words is "one hundred eleven billion, three hundred ten million, two hundred twenty thousand, one hundred thirteen".