12120322320 has 60 divisors (see below), whose sum is σ = 40704084876. Its totient is φ = 3232085760.

The previous prime is 12120322273. The next prime is 12120322429. The reversal of 12120322320 is 2322302121.

12120322320 is a `hidden beast` number, since 1 + 2 + 1 + 20 + 322 + 320 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 7825879296 + 4294443024 = 88464^2 + 65532^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12120322293 and 12120322302.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8416171 + ... + 8417610.

Almost surely, 2^12120322320 is an apocalyptic number.

12120322320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12120322320 is an abundant number, since it is smaller than the sum of its proper divisors (28583762556).

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

12120322320 is a wasteful number, since it uses less digits than its factorization.

12120322320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16833800 (or 16833791 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 12120322320 its reverse (2322302121), we get a palindrome (14442624441).

The spelling of 12120322320 in words is "twelve billion, one hundred twenty million, three hundred twenty-two thousand, three hundred twenty".