1322020020000 has 120 divisors (see below), whose sum is σ = 4336490266416. Its totient is φ = 352538656000.

The previous prime is 1322020019981. The next prime is 1322020020001. The reversal of 1322020020000 is 200202231.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (1322020020001) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 10956834 + ... + 11076833.

Almost surely, 2^{1322020020000} is an apocalyptic number.

1322020020000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1322020020000 is an abundant number, since it is smaller than the sum of its proper divisors (3014470246416).

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

1322020020000 is an equidigital number, since it uses as much as digits as its factorization.

1322020020000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22033700 (or 22033677 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

Adding to 1322020020000 its reverse (200202231), we get a palindrome (1322220222231).

The spelling of 1322020020000 in words is "one trillion, three hundred twenty-two billion, twenty million, twenty thousand".