12111311240 has 32 divisors (see below), whose sum is σ = 31143372480. Its totient is φ = 4152449472.

The previous prime is 12111311239. The next prime is 12111311257. The reversal of 12111311240 is 4211311121.

12111311240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 21627062 + ... + 21627621.

It is an arithmetic number, because the mean of its divisors is an integer number (973230390).

Almost surely, 2^12111311240 is an apocalyptic number.

12111311240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12111311240 is an abundant number, since it is smaller than the sum of its proper divisors (19032061240).

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

12111311240 is a wasteful number, since it uses less digits than its factorization.

12111311240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43254701 (or 43254697 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 12111311240 its reverse (4211311121), we get a palindrome (16322622361).

The spelling of 12111311240 in words is "twelve billion, one hundred eleven million, three hundred eleven thousand, two hundred forty".