211012221211 has 4 divisors (see below), whose sum is σ = 230195150424. Its totient is φ = 191829292000.

The previous prime is 211012221191. The next prime is 211012221271. The reversal of 211012221211 is 112122210112.

211012221211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 211012221211 - 2¹³ = 211012213019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211012221271) 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 3 ways as a sum of consecutive naturals, for example, 9591464590 + ... + 9591464611.

It is an arithmetic number, because the mean of its divisors is an integer number (57548787606).

Almost surely, 2^211012221211 is an apocalyptic number.

211012221211 is a deficient number, since it is larger than the sum of its proper divisors (19182929213).

211012221211 is a wasteful number, since it uses less digits than its factorization.

211012221211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19182929212.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 211012221211 its reverse (112122210112), we get a palindrome (323134431323).

The spelling of 211012221211 in words is "two hundred eleven billion, twelve million, two hundred twenty-one thousand, two hundred eleven".