211201212211 has 16 divisors (see below), whose sum is σ = 237633274368. Its totient is φ = 186055372000.

The previous prime is 211201212193. The next prime is 211201212253. The reversal of 211201212211 is 112212102112.

It is a cyclic number.

It is not a de Polignac number, because 211201212211 - 2¹⁵ = 211201179443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211201212611) 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, 1970125 + ... + 2074558.

It is an arithmetic number, because the mean of its divisors is an integer number (14852079648).

Almost surely, 2^211201212211 is an apocalyptic number.

211201212211 is a deficient number, since it is larger than the sum of its proper divisors (26432062157).

211201212211 is a wasteful number, since it uses less digits than its factorization.

211201212211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4044842.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 211201212211 its reverse (112212102112), we get a palindrome (323413314323).

The spelling of 211201212211 in words is "two hundred eleven billion, two hundred one million, two hundred twelve thousand, two hundred eleven".