12120221304 has 96 divisors (see below), whose sum is σ = 33008976000. Its totient is φ = 4017586176.

The previous prime is 12120221293. The next prime is 12120221327. The reversal of 12120221304 is 40312202121.

It is a happy number.

12120221304 is a `hidden beast` number, since 121 + 20 + 221 + 304 = 666.

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

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 23 ways as a sum of consecutive naturals, for example, 15760632 + ... + 15761400.

It is an arithmetic number, because the mean of its divisors is an integer number (343843500).

Almost surely, 2^12120221304 is an apocalyptic number.

It is an amenable number.

12120221304 is an abundant number, since it is smaller than the sum of its proper divisors (20888754696).

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

12120221304 is a wasteful number, since it uses less digits than its factorization.

12120221304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1717 (or 1710 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 12120221304 its reverse (40312202121), we get a palindrome (52432423425).

The spelling of 12120221304 in words is "twelve billion, one hundred twenty million, two hundred twenty-one thousand, three hundred four".