211120020211 has 4 divisors (see below), whose sum is σ = 211122454312. Its totient is φ = 211117586112.

The previous prime is 211120020187. The next prime is 211120020217. The reversal of 211120020211 is 112020021112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 211120020211 - 2⁹ = 211120019699 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211120020191 and 211120020200.

It is not an unprimeable number, because it can be changed into a prime (211120020217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1081950 + ... + 1262083.

It is an arithmetic number, because the mean of its divisors is an integer number (52780613578).

Almost surely, 2^211120020211 is an apocalyptic number.

211120020211 is a deficient number, since it is larger than the sum of its proper divisors (2434101).

211120020211 is an equidigital number, since it uses as much as digits as its factorization.

211120020211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2434100.

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

Adding to 211120020211 its reverse (112020021112), we get a palindrome (323140041323).

Subtracting from 211120020211 its reverse (112020021112), we obtain a palindrome (99099999099).

The spelling of 211120020211 in words is "two hundred eleven billion, one hundred twenty million, twenty thousand, two hundred eleven".