2001020321000 has 64 divisors (see below), whose sum is σ = 4928829048000. Its totient is φ = 758281377600.

The previous prime is 2001020320979. The next prime is 2001020321011. The reversal of 2001020321000 is 1230201002.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52639430 + ... + 52677429.

It is an arithmetic number, because the mean of its divisors is an integer number (77012953875).

Almost surely, 2^{2001020321000} is an apocalyptic number.

2001020321000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001020321000 is an abundant number, since it is smaller than the sum of its proper divisors (2927808727000).

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

2001020321000 is a wasteful number, since it uses less digits than its factorization.

2001020321000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105316899 (or 105316885 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 2001020321000 its reverse (1230201002), we get a palindrome (2002250522002).

The spelling of 2001020321000 in words is "two trillion, one billion, twenty million, three hundred twenty-one thousand".