2221321231200 has 288 divisors, whose sum is σ = 7321911117696. Its totient is φ = 584863989760.

The previous prime is 2221321231163. The next prime is 2221321231219. The reversal of 2221321231200 is 21321231222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 614131792 + ... + 614135408.

It is an arithmetic number, because the mean of its divisors is an integer number (25423302492).

Almost surely, 2^{2221321231200} is an apocalyptic number.

2221321231200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2221321231200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3660955558848).

2221321231200 is an abundant number, since it is smaller than the sum of its proper divisors (5100589886496).

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

2221321231200 is a wasteful number, since it uses less digits than its factorization.

2221321231200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6806 (or 6793 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 2221321231200 its reverse (21321231222), we get a palindrome (2242642462422).

The spelling of 2221321231200 in words is "two trillion, two hundred twenty-one billion, three hundred twenty-one million, two hundred thirty-one thousand, two hundred".