111123133040 has 80 divisors (see below), whose sum is σ = 267971911200. Its totient is φ = 42819609600.

The previous prime is 111123133039. The next prime is 111123133049. The reversal of 111123133040 is 40331321111.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111123133049) 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, 113111 + ... + 484809.

It is an arithmetic number, because the mean of its divisors is an integer number (3349648890).

Almost surely, 2^111123133040 is an apocalyptic number.

111123133040 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 111123133040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133985955600).

111123133040 is an abundant number, since it is smaller than the sum of its proper divisors (156848778160).

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

111123133040 is a wasteful number, since it uses less digits than its factorization.

111123133040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371850 (or 371844 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 111123133040 its reverse (40331321111), we get a palindrome (151454454151).

The spelling of 111123133040 in words is "one hundred eleven billion, one hundred twenty-three million, one hundred thirty-three thousand, forty".