1200330321020 has 48 divisors (see below), whose sum is σ = 2547602238720. Its totient is φ = 475019790336.

The previous prime is 1200330320983. The next prime is 1200330321079. The reversal of 1200330321020 is 201230330021.

It is a self number, because there is not a number n which added to its sum of digits gives 1200330321020.

It is a congruent number.

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, 1058069 + ... + 1876211.

It is an arithmetic number, because the mean of its divisors is an integer number (53075046640).

Almost surely, 2^{1200330321020} is an apocalyptic number.

1200330321020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200330321020 is an abundant number, since it is smaller than the sum of its proper divisors (1347271917700).

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

1200330321020 is a wasteful number, since it uses less digits than its factorization.

1200330321020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818934 (or 818932 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 1200330321020 its reverse (201230330021), we get a palindrome (1401560651041).

Subtracting from 1200330321020 its reverse (201230330021), we obtain a palindrome (999099990999).

The spelling of 1200330321020 in words is "one trillion, two hundred billion, three hundred thirty million, three hundred twenty-one thousand, twenty".