212211121112211 has 16 divisors (see below), whose sum is σ = 304721229446816. Its totient is φ = 130588105671936.

The previous prime is 212211121112201. The next prime is 212211121112279. The reversal of 212211121112211 is 112211121112212.

It is not a de Polignac number, because 212211121112211 - 2¹⁹ = 212211120587923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212211121112201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68325400 + ... + 71363733.

It is an arithmetic number, because the mean of its divisors is an integer number (19045076840426).

Almost surely, 2^{212211121112211} is an apocalyptic number.

212211121112211 is a deficient number, since it is larger than the sum of its proper divisors (92510108334605).

212211121112211 is a wasteful number, since it uses less digits than its factorization.

212211121112211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139728102.

The product of its digits is 64, while the sum is 21.

Adding to 212211121112211 its reverse (112211121112212), we get a palindrome (324422242224423).

Subtracting from 212211121112211 its reverse (112211121112212), we obtain a palindrome (99999999999999).

The spelling of 212211121112211 in words is "two hundred twelve trillion, two hundred eleven billion, one hundred twenty-one million, one hundred twelve thousand, two hundred eleven".