1322444420020 has 72 divisors (see below), whose sum is σ = 2870382585672. Its totient is φ = 511775815680.

The previous prime is 1322444419999. The next prime is 1322444420041. The reversal of 1322444420020 is 200244442231.

It is an interprime number because it is at equal distance from previous prime (1322444419999) and next prime (1322444420041).

It can be written as a sum of positive squares in 4 ways, for example, as 166380778404 + 1156063641616 = 407898^2 + 1075204^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 98265132 + ... + 98278588.

It is an arithmetic number, because the mean of its divisors is an integer number (39866424801).

Almost surely, 2^{1322444420020} is an apocalyptic number.

1322444420020 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 1322444420020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1435191292836).

1322444420020 is an abundant number, since it is smaller than the sum of its proper divisors (1547938165652).

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

1322444420020 is a wasteful number, since it uses less digits than its factorization.

1322444420020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18641 (or 18608 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 1322444420020 its reverse (200244442231), we get a palindrome (1522688862251).

The spelling of 1322444420020 in words is "one trillion, three hundred twenty-two billion, four hundred forty-four million, four hundred twenty thousand, twenty".