12221320200000 has 336 divisors, whose sum is σ = 40527741558528. Its totient is φ = 3250080000000.

The previous prime is 12221320199969. The next prime is 12221320200017. The reversal of 12221320200000 is 202312221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 220172250 + ... + 220227750.

It is an arithmetic number, because the mean of its divisors is an integer number (120618278448).

Almost surely, 2^{12221320200000} is an apocalyptic number.

12221320200000 is a gapful number since it is divisible by the number (10) 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 12221320200000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20263870779264).

12221320200000 is an abundant number, since it is smaller than the sum of its proper divisors (28306421358528).

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

12221320200000 is an frugal number, since it uses more digits than its factorization.

12221320200000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55908 (or 55878 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 12221320200000 its reverse (202312221), we get a palindrome (12221522512221).

The spelling of 12221320200000 in words is "twelve trillion, two hundred twenty-one billion, three hundred twenty million, two hundred thousand".