12211201210211 has 4 divisors (see below), whose sum is σ = 12378477939192. Its totient is φ = 12043924481232.

The previous prime is 12211201210151. The next prime is 12211201210249. The reversal of 12211201210211 is 11201210211221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12211201210211 - 2¹⁰ = 12211201209187 is a prime.

It is a super-2 number, since 2×12211201210211² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12211201210211.

It is not an unprimeable number, because it can be changed into a prime (12211201230211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83638364381 + ... + 83638364526.

It is an arithmetic number, because the mean of its divisors is an integer number (3094619484798).

Almost surely, 2^{12211201210211} is an apocalyptic number.

12211201210211 is a deficient number, since it is larger than the sum of its proper divisors (167276728981).

12211201210211 is an equidigital number, since it uses as much as digits as its factorization.

12211201210211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167276728980.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 12211201210211 its reverse (11201210211221), we get a palindrome (23412411421432).

The spelling of 12211201210211 in words is "twelve trillion, two hundred eleven billion, two hundred one million, two hundred ten thousand, two hundred eleven".