12336721240 has 32 divisors (see below), whose sum is σ = 28434641760. Its totient is φ = 4814329600.

The previous prime is 12336721237. The next prime is 12336721247. The reversal of 12336721240 is 4212763321.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12336721247) 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, 3759556 + ... + 3762835.

It is an arithmetic number, because the mean of its divisors is an integer number (888582555).

Almost surely, 2^12336721240 is an apocalyptic number.

12336721240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12336721240 is an abundant number, since it is smaller than the sum of its proper divisors (16097920520).

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

12336721240 is a wasteful number, since it uses less digits than its factorization.

12336721240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7522443 (or 7522439 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

The spelling of 12336721240 in words is "twelve billion, three hundred thirty-six million, seven hundred twenty-one thousand, two hundred forty".