12111231313320 has 64 divisors (see below), whose sum is σ = 36693433520640. Its totient is φ = 3197684832000.

The previous prime is 12111231313297. The next prime is 12111231313351. The reversal of 12111231313320 is 2331313211121.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 499626136 + ... + 499650375.

It is an arithmetic number, because the mean of its divisors is an integer number (573334898760).

Almost surely, 2^{12111231313320} is an apocalyptic number.

12111231313320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12111231313320 is an abundant number, since it is smaller than the sum of its proper divisors (24582202207320).

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

12111231313320 is a wasteful number, since it uses less digits than its factorization.

12111231313320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999276626 (or 999276622 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 12111231313320 its reverse (2331313211121), we get a palindrome (14442544524441).

The spelling of 12111231313320 in words is "twelve trillion, one hundred eleven billion, two hundred thirty-one million, three hundred thirteen thousand, three hundred twenty".