212122212111211 has 16 divisors (see below), whose sum is σ = 214763522964480. Its totient is φ = 209486736043200.

The previous prime is 212122212111163. The next prime is 212122212111233. The reversal of 212122212111211 is 112111212221212.

It is a cyclic number.

It is not a de Polignac number, because 212122212111211 - 2¹⁷ = 212122211980139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212122212111281) 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, 364040446 + ... + 364622668.

It is an arithmetic number, because the mean of its divisors is an integer number (13422720185280).

Almost surely, 2^{212122212111211} is an apocalyptic number.

212122212111211 is a deficient number, since it is larger than the sum of its proper divisors (2641310853269).

212122212111211 is a wasteful number, since it uses less digits than its factorization.

212122212111211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587226.

The product of its digits is 128, while the sum is 22.

Adding to 212122212111211 its reverse (112111212221212), we get a palindrome (324233424332423).

The spelling of 212122212111211 in words is "two hundred twelve trillion, one hundred twenty-two billion, two hundred twelve million, one hundred eleven thousand, two hundred eleven".