111443123444 has 12 divisors (see below), whose sum is σ = 195077652000. Its totient is φ = 55706651448.

The previous prime is 111443123387. The next prime is 111443123509. The reversal of 111443123444 is 444321344111.

It is a super-2 number, since 2×111443123444² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 111443123444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3710744 + ... + 3740655.

It is an arithmetic number, because the mean of its divisors is an integer number (16256471000).

Almost surely, 2^111443123444 is an apocalyptic number.

It is an amenable number.

111443123444 is a deficient number, since it is larger than the sum of its proper divisors (83634528556).

111443123444 is a wasteful number, since it uses less digits than its factorization.

111443123444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7455142 (or 7455140 counting only the distinct ones).

The product of its digits is 18432, while the sum is 32.

Adding to 111443123444 its reverse (444321344111), we get a palindrome (555764467555).

The spelling of 111443123444 in words is "one hundred eleven billion, four hundred forty-three million, one hundred twenty-three thousand, four hundred forty-four".