12221120011211 has 4 divisors (see below), whose sum is σ = 12615349689024. Its totient is φ = 11826890333400.

The previous prime is 12221120011207. The next prime is 12221120011223. The reversal of 12221120011211 is 11211002112221.

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

It is not a de Polignac number, because 12221120011211 - 2² = 12221120011207 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 12221120011211.

It is not an unprimeable number, because it can be changed into a prime (12221120011271) 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, 197114838860 + ... + 197114838921.

It is an arithmetic number, because the mean of its divisors is an integer number (3153837422256).

Almost surely, 2^{12221120011211} is an apocalyptic number.

12221120011211 is a deficient number, since it is larger than the sum of its proper divisors (394229677813).

12221120011211 is an equidigital number, since it uses as much as digits as its factorization.

12221120011211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394229677812.

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

Adding to 12221120011211 its reverse (11211002112221), we get a palindrome (23432122123432).

The spelling of 12221120011211 in words is "twelve trillion, two hundred twenty-one billion, one hundred twenty million, eleven thousand, two hundred eleven".