111331213331 has 4 divisors (see below), whose sum is σ = 119895152832. Its totient is φ = 102767273832.

The previous prime is 111331213319. The next prime is 111331213337. The reversal of 111331213331 is 133312133111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133312133111 = 17 ⋅7841890183.

It is a cyclic number.

It is not a de Polignac number, because 111331213331 - 2¹⁴ = 111331196947 is a prime.

It is a super-2 number, since 2×111331213331² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111331213297 and 111331213306.

It is not an unprimeable number, because it can be changed into a prime (111331213337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4281969731 + ... + 4281969756.

It is an arithmetic number, because the mean of its divisors is an integer number (29973788208).

Almost surely, 2^111331213331 is an apocalyptic number.

111331213331 is a deficient number, since it is larger than the sum of its proper divisors (8563939501).

111331213331 is an equidigital number, since it uses as much as digits as its factorization.

111331213331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8563939500.

The product of its digits is 486, while the sum is 23.

Adding to 111331213331 its reverse (133312133111), we get a palindrome (244643346442).

The spelling of 111331213331 in words is "one hundred eleven billion, three hundred thirty-one million, two hundred thirteen thousand, three hundred thirty-one".