1203321300000 has 864 divisors, whose sum is σ = 4284261289728. Its totient is φ = 295488000000.

The previous prime is 1203321299987. The next prime is 1203321300007. The reversal of 1203321300000 is 31233021.

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

It is not an unprimeable number, because it can be changed into a prime (1203321300007) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 4440299865 + ... + 4440300135.

It is an arithmetic number, because the mean of its divisors is an integer number (4958635752).

Almost surely, 2^{1203321300000} is an apocalyptic number.

1203321300000 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 1203321300000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2142130644864).

1203321300000 is an abundant number, since it is smaller than the sum of its proper divisors (3080939989728).

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

1203321300000 is an equidigital number, since it uses as much as digits as its factorization.

1203321300000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388 (or 341 counting only the distinct ones).

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

Adding to 1203321300000 its reverse (31233021), we get a palindrome (1203352533021).

The spelling of 1203321300000 in words is "one trillion, two hundred three billion, three hundred twenty-one million, three hundred thousand".