20211120211 has 16 divisors (see below), whose sum is σ = 22236134400. Its totient is φ = 18284954688.

The previous prime is 20211120169. The next prime is 20211120217. The reversal of 20211120211 is 11202111202.

It is a cyclic number.

It is not a de Polignac number, because 20211120211 - 2¹¹ = 20211118163 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20211120191 and 20211120200.

It is not an unprimeable number, because it can be changed into a prime (20211120217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 232150 + ... + 307108.

It is an arithmetic number, because the mean of its divisors is an integer number (1389758400).

Almost surely, 2^20211120211 is an apocalyptic number.

20211120211 is a deficient number, since it is larger than the sum of its proper divisors (2025014189).

20211120211 is a wasteful number, since it uses less digits than its factorization.

20211120211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75618.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20211120211 its reverse (11202111202), we get a palindrome (31413231413).

Subtracting from 20211120211 its reverse (11202111202), we obtain a palindrome (9009009009).

It can be divided in two parts, 202111202 and 11, that multiplied together give a palindrome (2223223222).

The spelling of 20211120211 in words is "twenty billion, two hundred eleven million, one hundred twenty thousand, two hundred eleven".