20121303323200 has 42 divisors (see below), whose sum is σ = 49510981993586. Its totient is φ = 8048521328640.

The previous prime is 20121303323129. The next prime is 20121303323207. The reversal of 20121303323200 is 232330312102.

It can be written as a sum of positive squares in 3 ways, for example, as 164569771584 + 19956733551616 = 405672^2 + 4467296^2 .

It is not an unprimeable number, because it can be changed into a prime (20121303323207) 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, 6287905689 + ... + 6287908888.

Almost surely, 2^{20121303323200} is an apocalyptic number.

20121303323200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20121303323200 is an abundant number, since it is smaller than the sum of its proper divisors (29389678670386).

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

20121303323200 is a wasteful number, since it uses less digits than its factorization.

20121303323200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12575814599 (or 12575814584 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 20121303323200 its reverse (232330312102), we get a palindrome (20353633635302).

The spelling of 20121303323200 in words is "twenty trillion, one hundred twenty-one billion, three hundred three million, three hundred twenty-three thousand, two hundred".