212211312211 has 4 divisors (see below), whose sum is σ = 213831246024. Its totient is φ = 210591378400.

The previous prime is 212211312179. The next prime is 212211312217. The reversal of 212211312211 is 112213112212.

212211312211 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 212211312211 - 2⁵ = 212211312179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212211312217) 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, 809966710 + ... + 809966971.

It is an arithmetic number, because the mean of its divisors is an integer number (53457811506).

Almost surely, 2^212211312211 is an apocalyptic number.

212211312211 is a deficient number, since it is larger than the sum of its proper divisors (1619933813).

212211312211 is a wasteful number, since it uses less digits than its factorization.

212211312211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1619933812.

The product of its digits is 96, while the sum is 19.

Adding to 212211312211 its reverse (112213112212), we get a palindrome (324424424423).

The spelling of 212211312211 in words is "two hundred twelve billion, two hundred eleven million, three hundred twelve thousand, two hundred eleven".