1000321330020 has 192 divisors, whose sum is σ = 3005056696320. Its totient is φ = 248008780800.

The previous prime is 1000321330013. The next prime is 1000321330037. The reversal of 1000321330020 is 200331230001.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15300561 + ... + 15365799.

It is an arithmetic number, because the mean of its divisors is an integer number (15651336960).

Almost surely, 2^{1000321330020} is an apocalyptic number.

1000321330020 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 1000321330020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1502528348160).

1000321330020 is an abundant number, since it is smaller than the sum of its proper divisors (2004735366300).

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

1000321330020 is a wasteful number, since it uses less digits than its factorization.

1000321330020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65586 (or 65584 counting only the distinct ones).

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

Adding to 1000321330020 its reverse (200331230001), we get a palindrome (1200652560021).

The spelling of 1000321330020 in words is "one trillion, three hundred twenty-one million, three hundred thirty thousand, twenty".