212112111211 has 32 divisors (see below), whose sum is σ = 289620979200. Its totient is φ = 149982209280.

The previous prime is 212112111209. The next prime is 212112111227. The reversal of 212112111211 is 112111211212.

It is a cyclic number.

It is not a de Polignac number, because 212112111211 - 2¹ = 212112111209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212112111311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1736706 + ... + 1854823.

It is an arithmetic number, because the mean of its divisors is an integer number (9050655600).

Almost surely, 2^212112111211 is an apocalyptic number.

212112111211 is a deficient number, since it is larger than the sum of its proper divisors (77508867989).

212112111211 is a wasteful number, since it uses less digits than its factorization.

212112111211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3591619.

The product of its digits is 16, while the sum is 16.

Adding to 212112111211 its reverse (112111211212), we get a palindrome (324223322423).

It can be divided in two parts, 212112 and 111211, that added together give a palindrome (323323).

The spelling of 212112111211 in words is "two hundred twelve billion, one hundred twelve million, one hundred eleven thousand, two hundred eleven".