12211223220131 has 12 divisors (see below), whose sum is σ = 14000615835912. Its totient is φ = 10608845510016.

The previous prime is 12211223220121. The next prime is 12211223220137. The reversal of 12211223220131 is 13102232211221.

It is not a de Polignac number, because 12211223220131 - 2⁶ = 12211223220067 is a prime.

It is a super-2 number, since 2×12211223220131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12211223220097 and 12211223220106.

It is not an unprimeable number, because it can be changed into a prime (12211223220137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2125166501 + ... + 2125172246.

It is an arithmetic number, because the mean of its divisors is an integer number (1166717986326).

Almost surely, 2^{12211223220131} is an apocalyptic number.

12211223220131 is a deficient number, since it is larger than the sum of its proper divisors (1789392615781).

12211223220131 is a wasteful number, since it uses less digits than its factorization.

12211223220131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4250338790 (or 4250338777 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 12211223220131 its reverse (13102232211221), we get a palindrome (25313455431352).

The spelling of 12211223220131 in words is "twelve trillion, two hundred eleven billion, two hundred twenty-three million, two hundred twenty thousand, one hundred thirty-one".