111123345144 has 32 divisors (see below), whose sum is σ = 317495272320. Its totient is φ = 31749527136.

The previous prime is 111123345121. The next prime is 111123345173. The reversal of 111123345144 is 441543321111.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 330724074 + ... + 330724409.

It is an arithmetic number, because the mean of its divisors is an integer number (9921727260).

Almost surely, 2^111123345144 is an apocalyptic number.

111123345144 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

111123345144 is an abundant number, since it is smaller than the sum of its proper divisors (206371927176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111123345144 is a wasteful number, since it uses less digits than its factorization.

111123345144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661448499 (or 661448495 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

Adding to 111123345144 its reverse (441543321111), we get a palindrome (552666666255).

The spelling of 111123345144 in words is "one hundred eleven billion, one hundred twenty-three million, three hundred forty-five thousand, one hundred forty-four".