111220111313 has 8 divisors (see below), whose sum is σ = 117771428808. Its totient is φ = 104669789184.

The previous prime is 111220111283. The next prime is 111220111411. The reversal of 111220111313 is 313111022111.

It can be written as a sum of positive squares in 4 ways, for example, as 34442905744 + 76777205569 = 185588^2 + 277087^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111220111313 is a prime.

It is a super-2 number, since 2×111220111313² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111220111291 and 111220111300.

It is not an unprimeable number, because it can be changed into a prime (111220113313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12356 + ... + 471797.

It is an arithmetic number, because the mean of its divisors is an integer number (14721428601).

Almost surely, 2^111220111313 is an apocalyptic number.

It is an amenable number.

111220111313 is a deficient number, since it is larger than the sum of its proper divisors (6551317495).

111220111313 is a wasteful number, since it uses less digits than its factorization.

111220111313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497683.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 111220111313 its reverse (313111022111), we get a palindrome (424331133424).

The spelling of 111220111313 in words is "one hundred eleven billion, two hundred twenty million, one hundred eleven thousand, three hundred thirteen".