111123434120 has 32 divisors (see below), whose sum is σ = 250105930200. Its totient is φ = 44435470848.

The previous prime is 111123434119. The next prime is 111123434131. The reversal of 111123434120 is 21434321111.

It can be written as a sum of positive squares in 4 ways, for example, as 55188346084 + 55935088036 = 234922^2 + 236506^2 .

It is a super-2 number, since 2×111123434120² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 304499 + ... + 561218.

Almost surely, 2^111123434120 is an apocalyptic number.

111123434120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111123434120 is an abundant number, since it is smaller than the sum of its proper divisors (138982496080).

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

111123434120 is a wasteful number, since it uses less digits than its factorization.

111123434120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868937 (or 868933 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 111123434120 its reverse (21434321111), we get a palindrome (132557755231).

The spelling of 111123434120 in words is "one hundred eleven billion, one hundred twenty-three million, four hundred thirty-four thousand, one hundred twenty".