211210212112211 has 64 divisors (see below), whose sum is σ = 239607074488320. Its totient is φ = 184846717440000.

The previous prime is 211210212112201. The next prime is 211210212112231. The reversal of 211210212112211 is 112211212012112.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 211210212112211 - 2¹⁸ = 211210211850067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211210212112201) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18607184186 + ... + 18607195536.

It is an arithmetic number, because the mean of its divisors is an integer number (3743860538880).

Almost surely, 2^{211210212112211} is an apocalyptic number.

211210212112211 is a deficient number, since it is larger than the sum of its proper divisors (28396862376109).

211210212112211 is a wasteful number, since it uses less digits than its factorization.

211210212112211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16188.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 211210212112211 its reverse (112211212012112), we get a palindrome (323421424124323).

It can be divided in two parts, 21121021 and 2112211, that added together give a palindrome (23233232).

The spelling of 211210212112211 in words is "two hundred eleven trillion, two hundred ten billion, two hundred twelve million, one hundred twelve thousand, two hundred eleven".