12312231133320 has 192 divisors, whose sum is σ = 40406982295680. Its totient is φ = 3251133462528.

The previous prime is 12312231133303. The next prime is 12312231133339. The reversal of 12312231133320 is 2333113221321.

12312231133320 is a `hidden beast` number, since 1 + 2 + 3 + 1 + 22 + 311 + 3 + 3 + 320 = 666.

It is a super-2 number, since 2×12312231133320² (a number of 27 digits) contains 22 as substring.

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 47 ways as a sum of consecutive naturals, for example, 43100479 + ... + 43385201.

It is an arithmetic number, because the mean of its divisors is an integer number (210453032790).

Almost surely, 2^{12312231133320} is an apocalyptic number.

12312231133320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12312231133320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20203491147840).

12312231133320 is an abundant number, since it is smaller than the sum of its proper divisors (28094751162360).

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

12312231133320 is a wasteful number, since it uses less digits than its factorization.

12312231133320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285916 (or 285909 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 12312231133320 its reverse (2333113221321), we get a palindrome (14645344354641).

The spelling of 12312231133320 in words is "twelve trillion, three hundred twelve billion, two hundred thirty-one million, one hundred thirty-three thousand, three hundred twenty".