12211022101211 has 4 divisors (see below), whose sum is σ = 12211155540192. Its totient is φ = 12210888662232.

The previous prime is 12211022101153. The next prime is 12211022101249. The reversal of 12211022101211 is 11210122011221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12211022101211 is a prime.

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 12211022101211.

It is not an unprimeable number, because it can be changed into a prime (12211022101511) 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, 66582131 + ... + 66765276.

It is an arithmetic number, because the mean of its divisors is an integer number (3052788885048).

Almost surely, 2^{12211022101211} is an apocalyptic number.

12211022101211 is a deficient number, since it is larger than the sum of its proper divisors (133438981).

12211022101211 is an equidigital number, since it uses as much as digits as its factorization.

12211022101211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133438980.

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

Adding to 12211022101211 its reverse (11210122011221), we get a palindrome (23421144112432).

The spelling of 12211022101211 in words is "twelve trillion, two hundred eleven billion, twenty-two million, one hundred one thousand, two hundred eleven".