1322554120020 has 432 divisors, whose sum is σ = 4860019906560. Its totient is φ = 285135676416.

The previous prime is 1322554120003. The next prime is 1322554120031. The reversal of 1322554120020 is 200214552231.

1322554120020 is a `hidden beast` number, since 1 + 3 + 225 + 5 + 412 + 0 + 0 + 20 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 105976141 + ... + 105988619.

It is an arithmetic number, because the mean of its divisors is an integer number (11250046080).

Almost surely, 2^{1322554120020} is an apocalyptic number.

1322554120020 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 1322554120020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2430009953280).

1322554120020 is an abundant number, since it is smaller than the sum of its proper divisors (3537465786540).

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

1322554120020 is a wasteful number, since it uses less digits than its factorization.

1322554120020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12772 (or 12748 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 1322554120020 its reverse (200214552231), we get a palindrome (1522768672251).

The spelling of 1322554120020 in words is "one trillion, three hundred twenty-two billion, five hundred fifty-four million, one hundred twenty thousand, twenty".