20001110211 has 24 divisors (see below), whose sum is σ = 29518616400. Its totient is φ = 13046844096.

The previous prime is 20001110197. The next prime is 20001110221. The reversal of 20001110211 is 11201110002.

It is a happy number.

It is not a de Polignac number, because 20001110211 - 2¹⁰ = 20001109187 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 = 20001110193 and 20001110202.

It is not an unprimeable number, because it can be changed into a prime (20001110221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21460 + ... + 201153.

It is an arithmetic number, because the mean of its divisors is an integer number (1229942350).

Almost surely, 2^20001110211 is an apocalyptic number.

20001110211 is a deficient number, since it is larger than the sum of its proper divisors (9517506189).

20001110211 is a wasteful number, since it uses less digits than its factorization.

20001110211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222835 (or 222832 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 20001110211 its reverse (11201110002), we get a palindrome (31202220213).

The spelling of 20001110211 in words is "twenty billion, one million, one hundred ten thousand, two hundred eleven".