111321403440 has 160 divisors (see below), whose sum is σ = 377735365056. Its totient is φ = 26952929280.

The previous prime is 111321403409. The next prime is 111321403511. The reversal of 111321403440 is 44304123111.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 111321403440.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 102139 + ... + 482778.

Almost surely, 2^111321403440 is an apocalyptic number.

111321403440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111321403440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188867682528).

111321403440 is an abundant number, since it is smaller than the sum of its proper divisors (266413961616).

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

111321403440 is a wasteful number, since it uses less digits than its factorization.

111321403440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585007 (or 585001 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 111321403440 its reverse (44304123111), we get a palindrome (155625526551).

The spelling of 111321403440 in words is "one hundred eleven billion, three hundred twenty-one million, four hundred three thousand, four hundred forty".