1322221020000 has 240 divisors, whose sum is σ = 4565424346560. Its totient is φ = 334034496000.

The previous prime is 1322221019971. The next prime is 1322221020031. The reversal of 1322221020000 is 201222231.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (240).

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 pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 560079 + ... + 1719921.

It is an arithmetic number, because the mean of its divisors is an integer number (19022601444).

Almost surely, 2^{1322221020000} is an apocalyptic number.

1322221020000 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 1322221020000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2282712173280).

1322221020000 is an abundant number, since it is smaller than the sum of its proper divisors (3243203326560).

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

1322221020000 is a wasteful number, since it uses less digits than its factorization.

1322221020000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159895 (or 1159872 counting only the distinct ones).

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

Adding to 1322221020000 its reverse (201222231), we get a palindrome (1322422242231).

The spelling of 1322221020000 in words is "one trillion, three hundred twenty-two billion, two hundred twenty-one million, twenty thousand".