20021000200011 has 12 divisors (see below), whose sum is σ = 28984502928888. Its totient is φ = 13317204043104.

The previous prime is 20021000200007. The next prime is 20021000200039. The reversal of 20021000200011 is 11000200012002.

It is not a de Polignac number, because 20021000200011 - 2² = 20021000200007 is a prime.

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 = 20021000199966 and 20021000200002.

It is not an unprimeable number, because it can be changed into a prime (20021000200211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2510781090 + ... + 2510789063.

It is an arithmetic number, because the mean of its divisors is an integer number (2415375244074).

Almost surely, 2^{20021000200011} is an apocalyptic number.

20021000200011 is a deficient number, since it is larger than the sum of its proper divisors (8963502728877).

20021000200011 is a wasteful number, since it uses less digits than its factorization.

20021000200011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5021570602 (or 5021570599 counting only the distinct ones).

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

Adding to 20021000200011 its reverse (11000200012002), we get a palindrome (31021200212013).

The spelling of 20021000200011 in words is "twenty trillion, twenty-one billion, two hundred thousand, eleven".