12221120211 has 32 divisors (see below), whose sum is σ = 16590299136. Its totient is φ = 8001504000.

The previous prime is 12221120203. The next prime is 12221120237. The reversal of 12221120211 is 11202112221.

It is not a de Polignac number, because 12221120211 - 2³ = 12221120203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12221120201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22589601 + ... + 22590141.

It is an arithmetic number, because the mean of its divisors is an integer number (518446848).

Almost surely, 2^12221120211 is an apocalyptic number.

12221120211 is a deficient number, since it is larger than the sum of its proper divisors (4369178925).

12221120211 is a wasteful number, since it uses less digits than its factorization.

12221120211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1163.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12221120211 its reverse (11202112221), we get a palindrome (23423232432).

The spelling of 12221120211 in words is "twelve billion, two hundred twenty-one million, one hundred twenty thousand, two hundred eleven".