211000221211 has 48 divisors (see below), whose sum is σ = 235467558144. Its totient is φ = 188925340032.

The previous prime is 211000221209. The next prime is 211000221239. The reversal of 211000221211 is 112122000112.

211000221211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 211000221211 - 2¹ = 211000221209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 211000221191 and 211000221200.

It is not an unprimeable number, because it can be changed into a prime (211000221241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 264742665 + ... + 264743461.

It is an arithmetic number, because the mean of its divisors is an integer number (4905574128).

Almost surely, 2^211000221211 is an apocalyptic number.

211000221211 is a deficient number, since it is larger than the sum of its proper divisors (24467336933).

211000221211 is a wasteful number, since it uses less digits than its factorization.

211000221211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1220 (or 1207 counting only the distinct ones).

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

Adding to 211000221211 its reverse (112122000112), we get a palindrome (323122221323).

The spelling of 211000221211 in words is "two hundred eleven billion, two hundred twenty-one thousand, two hundred eleven".