12331212011440 has 80 divisors (see below), whose sum is σ = 32841464136768. Its totient is φ = 4218079961088.

The previous prime is 12331212011413. The next prime is 12331212011473. The reversal of 12331212011440 is 4411021213321.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25184797 + ... + 25669756.

Almost surely, 2^{12331212011440} is an apocalyptic number.

12331212011440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12331212011440 is an abundant number, since it is smaller than the sum of its proper divisors (20510252125328).

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

12331212011440 is a wasteful number, since it uses less digits than its factorization.

12331212011440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50855006 (or 50855000 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 12331212011440 its reverse (4411021213321), we get a palindrome (16742233224761).

The spelling of 12331212011440 in words is "twelve trillion, three hundred thirty-one billion, two hundred twelve million, eleven thousand, four hundred forty".