212211222011211 has 16 divisors (see below), whose sum is σ = 299606892899328. Its totient is φ = 133145659536000.

The previous prime is 212211222011171. The next prime is 212211222011227. The reversal of 212211222011211 is 112110222112212.

It is not a de Polignac number, because 212211222011211 - 2¹⁰ = 212211222010187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212211222011231) 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, 100187955 + ... + 102284156.

It is an arithmetic number, because the mean of its divisors is an integer number (18725430806208).

Almost surely, 2^{212211222011211} is an apocalyptic number.

212211222011211 is a deficient number, since it is larger than the sum of its proper divisors (87395670888117).

212211222011211 is a wasteful number, since it uses less digits than its factorization.

212211222011211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202492682.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 212211222011211 its reverse (112110222112212), we get a palindrome (324321444123423).

The spelling of 212211222011211 in words is "two hundred twelve trillion, two hundred eleven billion, two hundred twenty-two million, eleven thousand, two hundred eleven".