200021111111001 has 64 divisors (see below), whose sum is σ = 290648686648320. Its totient is φ = 121922354062080.

The previous prime is 200021111110999. The next prime is 200021111111009. The reversal of 200021111111001 is 100111111120002.

It is not a de Polignac number, because 200021111111001 - 2¹ = 200021111110999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (200021111111009) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 626164815 + ... + 626484171.

It is an arithmetic number, because the mean of its divisors is an integer number (4541385728880).

Almost surely, 2^{200021111111001} is an apocalyptic number.

It is an amenable number.

200021111111001 is a deficient number, since it is larger than the sum of its proper divisors (90627575537319).

200021111111001 is a wasteful number, since it uses less digits than its factorization.

200021111111001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321814.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 200021111111001 its reverse (100111111120002), we get a palindrome (300132222231003).

Subtracting from 200021111111001 its reverse (100111111120002), we obtain a palindrome (99909999990999).

The spelling of 200021111111001 in words is "two hundred trillion, twenty-one billion, one hundred eleven million, one hundred eleven thousand, one".