12321314120 has 16 divisors (see below), whose sum is σ = 27722956860. Its totient is φ = 4928525632.

The previous prime is 12321314119. The next prime is 12321314149. The reversal of 12321314120 is 2141312321.

It can be written as a sum of positive squares in 2 ways, for example, as 11995944676 + 325369444 = 109526^2 + 18038^2 .

It is a super-2 number, since 2×12321314120² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 12321314092 and 12321314101.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154016387 + ... + 154016466.

Almost surely, 2^12321314120 is an apocalyptic number.

12321314120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12321314120 is an abundant number, since it is smaller than the sum of its proper divisors (15401642740).

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

12321314120 is a wasteful number, since it uses less digits than its factorization.

12321314120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308032864 (or 308032860 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 12321314120 its reverse (2141312321), we get a palindrome (14462626441).

The spelling of 12321314120 in words is "twelve billion, three hundred twenty-one million, three hundred fourteen thousand, one hundred twenty".