1320232220320 has 96 divisors (see below), whose sum is σ = 3360350060928. Its totient is φ = 487270867968.

The previous prime is 1320232220291. The next prime is 1320232220347. The reversal of 1320232220320 is 230222320231.

It is a junction number, because it is equal to n+sod(n) for n = 1320232220291 and 1320232220300.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5002717 + ... + 5260003.

It is an arithmetic number, because the mean of its divisors is an integer number (35003646468).

Almost surely, 2^{1320232220320} is an apocalyptic number.

1320232220320 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 1320232220320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1680175030464).

1320232220320 is an abundant number, since it is smaller than the sum of its proper divisors (2040117840608).

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

1320232220320 is a wasteful number, since it uses less digits than its factorization.

1320232220320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259782 (or 259774 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 1320232220320 its reverse (230222320231), we get a palindrome (1550454540551).

The spelling of 1320232220320 in words is "one trillion, three hundred twenty billion, two hundred thirty-two million, two hundred twenty thousand, three hundred twenty".