211210020211 has 4 divisors (see below), whose sum is σ = 220393064592. Its totient is φ = 202026975832.

The previous prime is 211210020191. The next prime is 211210020223. The reversal of 211210020211 is 112020012112.

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 211210020211 - 2³¹ = 209062536563 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211210020191 and 211210020200.

It is not an unprimeable number, because it can be changed into a prime (211210020251) 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, 4591522156 + ... + 4591522201.

It is an arithmetic number, because the mean of its divisors is an integer number (55098266148).

Almost surely, 2^211210020211 is an apocalyptic number.

211210020211 is a deficient number, since it is larger than the sum of its proper divisors (9183044381).

211210020211 is an equidigital number, since it uses as much as digits as its factorization.

211210020211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9183044380.

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

Adding to 211210020211 its reverse (112020012112), we get a palindrome (323230032323).

The spelling of 211210020211 in words is "two hundred eleven billion, two hundred ten million, twenty thousand, two hundred eleven".