12321020120 has 32 divisors (see below), whose sum is σ = 28073217600. Its totient is φ = 4866021888.

The previous prime is 12321020099. The next prime is 12321020161. The reversal of 12321020120 is 2102012321.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12321020095 and 12321020104.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1946369 + ... + 1952688.

It is an arithmetic number, because the mean of its divisors is an integer number (877288050).

Almost surely, 2^12321020120 is an apocalyptic number.

12321020120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12321020120 is an abundant number, since it is smaller than the sum of its proper divisors (15752197480).

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

12321020120 is a wasteful number, since it uses less digits than its factorization.

12321020120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3899147 (or 3899143 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 12321020120 its reverse (2102012321), we get a palindrome (14423032441).

The spelling of 12321020120 in words is "twelve billion, three hundred twenty-one million, twenty thousand, one hundred twenty".