12021321200208 has 40 divisors (see below), whose sum is σ = 31641024675168. Its totient is φ = 3931501272192.

The previous prime is 12021321200191. The next prime is 12021321200263. The reversal of 12021321200208 is 80200212312021.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2362678510 + ... + 2362683597.

Almost surely, 2^{12021321200208} is an apocalyptic number.

It is an amenable number.

12021321200208 is an abundant number, since it is smaller than the sum of its proper divisors (19619703474960).

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

12021321200208 is a wasteful number, since it uses less digits than its factorization.

12021321200208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4725362171 (or 4725362165 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 12021321200208 its reverse (80200212312021), we get a palindrome (92221533512229).

The spelling of 12021321200208 in words is "twelve trillion, twenty-one billion, three hundred twenty-one million, two hundred thousand, two hundred eight".