12001222220320 has 24 divisors (see below), whose sum is σ = 28352887495884. Its totient is φ = 4800488888064.

The previous prime is 12001222220303. The next prime is 12001222220341. The reversal of 12001222220320 is 2302222210021.

It can be written as a sum of positive squares in 2 ways, for example, as 10307361618064 + 1693860602256 = 3210508^2 + 1301484^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 37503819279 + ... + 37503819598.

Almost surely, 2^{12001222220320} is an apocalyptic number.

12001222220320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12001222220320 is an abundant number, since it is smaller than the sum of its proper divisors (16351665275564).

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

12001222220320 is an equidigital number, since it uses as much as digits as its factorization.

12001222220320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75007638892 (or 75007638884 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 12001222220320 its reverse (2302222210021), we get a palindrome (14303444430341).

The spelling of 12001222220320 in words is "twelve trillion, one billion, two hundred twenty-two million, two hundred twenty thousand, three hundred twenty".