12120110321 has 6 divisors (see below), whose sum is σ = 13322104866. Its totient is φ = 11018282000.

The previous prime is 12120110311. The next prime is 12120110351. The reversal of 12120110321 is 12301102121.

12120110321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 10920250000 + 1199860321 = 104500^2 + 34639^2 .

It is not a de Polignac number, because 12120110321 - 2⁶ = 12120110257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12120110296 and 12120110305.

It is not an unprimeable number, because it can be changed into a prime (12120110311) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 50082980 + ... + 50083221.

It is an arithmetic number, because the mean of its divisors is an integer number (2220350811).

Almost surely, 2^12120110321 is an apocalyptic number.

12120110321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12120110321 is a deficient number, since it is larger than the sum of its proper divisors (1201994545).

12120110321 is a wasteful number, since it uses less digits than its factorization.

12120110321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100166223 (or 100166212 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 12120110321 its reverse (12301102121), we get a palindrome (24421212442).

The spelling of 12120110321 in words is "twelve billion, one hundred twenty million, one hundred ten thousand, three hundred twenty-one".