1321030003200 has 720 divisors, whose sum is σ = 4581844514016. Its totient is φ = 335270707200.

The previous prime is 1321030003187. The next prime is 1321030003207. The reversal of 1321030003200 is 23000301231.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1321030003200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321030003207) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3991027035 + ... + 3991027365.

Almost surely, 2^{1321030003200} is an apocalyptic number.

1321030003200 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 1321030003200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2290922257008).

1321030003200 is an abundant number, since it is smaller than the sum of its proper divisors (3260814510816).

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

1321030003200 is an equidigital number, since it uses as much as digits as its factorization.

1321030003200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505 (or 431 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 1321030003200 its reverse (23000301231), we get a palindrome (1344030304431).

The spelling of 1321030003200 in words is "one trillion, three hundred twenty-one billion, thirty million, three thousand, two hundred".