2001200021010 has 96 divisors (see below), whose sum is σ = 5409578708352. Its totient is φ = 512866632960.

The previous prime is 2001200021003. The next prime is 2001200021021. The reversal of 2001200021010 is 101200021002.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 2001200020983 and 2001200021001.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3800014 + ... + 4294473.

It is an arithmetic number, because the mean of its divisors is an integer number (56349778212).

Almost surely, 2^{2001200021010} is an apocalyptic number.

2001200021010 is an abundant number, since it is smaller than the sum of its proper divisors (3408378687342).

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

2001200021010 is a wasteful number, since it uses less digits than its factorization.

2001200021010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8094608 (or 8094605 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 2001200021010 its reverse (101200021002), we get a palindrome (2102400042012).

The spelling of 2001200021010 in words is "two trillion, one billion, two hundred million, twenty-one thousand, ten".