111405344124 has 12 divisors (see below), whose sum is σ = 259945802984. Its totient is φ = 37135114704.

The previous prime is 111405344041. The next prime is 111405344131. The reversal of 111405344124 is 421443504111.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×111405344124² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111405344091 and 111405344100.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 4641889327 + ... + 4641889350.

Almost surely, 2^111405344124 is an apocalyptic number.

It is an amenable number.

111405344124 is an abundant number, since it is smaller than the sum of its proper divisors (148540458860).

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

111405344124 is a wasteful number, since it uses less digits than its factorization.

111405344124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9283778684 (or 9283778682 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

Adding to 111405344124 its reverse (421443504111), we get a palindrome (532848848235).

The spelling of 111405344124 in words is "one hundred eleven billion, four hundred five million, three hundred forty-four thousand, one hundred twenty-four".