111122111331 has 32 divisors (see below), whose sum is σ = 205247193600. Its totient is φ = 57725771040.

The previous prime is 111122111293. The next prime is 111122111333. The reversal of 111122111331 is 133111221111.

111122111331 is a `hidden beast` number, since 1 + 111 + 221 + 1 + 1 + 331 = 666.

It is not a de Polignac number, because 111122111331 - 2¹⁹ = 111121587043 is a prime.

It is a super-2 number, since 2×111122111331² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111122111333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26722816 + ... + 26726973.

It is an arithmetic number, because the mean of its divisors is an integer number (6413974800).

Almost surely, 2^111122111331 is an apocalyptic number.

111122111331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111122111331 is a deficient number, since it is larger than the sum of its proper divisors (94125082269).

111122111331 is a wasteful number, since it uses less digits than its factorization.

111122111331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53449816 (or 53449810 counting only the distinct ones).

The product of its digits is 36, while the sum is 18.

Adding to 111122111331 its reverse (133111221111), we get a palindrome (244233332442).

The spelling of 111122111331 in words is "one hundred eleven billion, one hundred twenty-two million, one hundred eleven thousand, three hundred thirty-one".