12111445240 has 32 divisors (see below), whose sum is σ = 27352080000. Its totient is φ = 4826564224.

The previous prime is 12111445237. The next prime is 12111445243. The reversal of 12111445240 is 4254411121.

It is an interprime number because it is at equal distance from previous prime (12111445237) and next prime (12111445243).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111445243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 552040 + ... + 573559.

It is an arithmetic number, because the mean of its divisors is an integer number (854752500).

Almost surely, 2^12111445240 is an apocalyptic number.

12111445240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12111445240 is an abundant number, since it is smaller than the sum of its proper divisors (15240634760).

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

12111445240 is a wasteful number, since it uses less digits than its factorization.

12111445240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1125879 (or 1125875 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

Adding to 12111445240 its reverse (4254411121), we get a palindrome (16365856361).

The spelling of 12111445240 in words is "twelve billion, one hundred eleven million, four hundred forty-five thousand, two hundred forty".