1111011323240 has 128 divisors (see below), whose sum is σ = 3078018558720. Its totient is φ = 351459993600.

The previous prime is 1111011323237. The next prime is 1111011323263. The reversal of 1111011323240 is 423231101111.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8235935 + ... + 8369745.

It is an arithmetic number, because the mean of its divisors is an integer number (24047019990).

Almost surely, 2^{1111011323240} is an apocalyptic number.

1111011323240 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 1111011323240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1539009279360).

1111011323240 is an abundant number, since it is smaller than the sum of its proper divisors (1967007235480).

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

1111011323240 is a wasteful number, since it uses less digits than its factorization.

1111011323240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136123 (or 136119 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 1111011323240 its reverse (423231101111), we get a palindrome (1534242424351).

It can be divided in two parts, 111101 and 1323240, that added together give a palindrome (1434341).

The spelling of 1111011323240 in words is "one trillion, one hundred eleven billion, eleven million, three hundred twenty-three thousand, two hundred forty".