20001200200011 has 80 divisors (see below), whose sum is σ = 31750723699200. Its totient is φ = 12511948087872.

The previous prime is 20001200200001. The next prime is 20001200200147. The reversal of 20001200200011 is 11000200210002.

It is not a de Polignac number, because 20001200200011 - 2⁶ = 20001200199947 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 = 20001200199966 and 20001200200002.

It is not an unprimeable number, because it can be changed into a prime (20001200200001) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1446316045 + ... + 1446329873.

It is an arithmetic number, because the mean of its divisors is an integer number (396884046240).

Almost surely, 2^{20001200200011} is an apocalyptic number.

20001200200011 is a deficient number, since it is larger than the sum of its proper divisors (11749523499189).

20001200200011 is a wasteful number, since it uses less digits than its factorization.

20001200200011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22750 (or 22741 counting only the distinct ones).

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

Adding to 20001200200011 its reverse (11000200210002), we get a palindrome (31001400410013).

Subtracting from 20001200200011 its reverse (11000200210002), we obtain a palindrome (9000999990009).

The spelling of 20001200200011 in words is "twenty trillion, one billion, two hundred million, two hundred thousand, eleven".