12221122210211 has 4 divisors (see below), whose sum is σ = 12481146087072. Its totient is φ = 11961098333352.

The previous prime is 12221122210207. The next prime is 12221122210217. The reversal of 12221122210211 is 11201222112221.

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 12221122210211 - 2² = 12221122210207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12221122210217) 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, 130011938360 + ... + 130011938453.

It is an arithmetic number, because the mean of its divisors is an integer number (3120286521768).

Almost surely, 2^{12221122210211} is an apocalyptic number.

12221122210211 is a deficient number, since it is larger than the sum of its proper divisors (260023876861).

12221122210211 is an equidigital number, since it uses as much as digits as its factorization.

12221122210211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260023876860.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 12221122210211 its reverse (11201222112221), we get a palindrome (23422344322432).

The spelling of 12221122210211 in words is "twelve trillion, two hundred twenty-one billion, one hundred twenty-two million, two hundred ten thousand, two hundred eleven".