1105131223424 has 128 divisors (see below), whose sum is σ = 2321928652800. Its totient is φ = 523252224000.

The previous prime is 1105131223423. The next prime is 1105131223451. The reversal of 1105131223424 is 4243221315011.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1105131223423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40130492 + ... + 40158020.

It is an arithmetic number, because the mean of its divisors is an integer number (18140067600).

Almost surely, 2^{1105131223424} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1105131223424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1160964326400).

1105131223424 is an abundant number, since it is smaller than the sum of its proper divisors (1216797429376).

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

1105131223424 is a wasteful number, since it uses less digits than its factorization.

1105131223424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27792 (or 27780 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 1105131223424 its reverse (4243221315011), we get a palindrome (5348352538435).

The spelling of 1105131223424 in words is "one trillion, one hundred five billion, one hundred thirty-one million, two hundred twenty-three thousand, four hundred twenty-four".