12211131322231 has 2 divisors, whose sum is σ = 12211131322232. Its totient is φ = 12211131322230.

The previous prime is 12211131322189. The next prime is 12211131322253. The reversal of 12211131322231 is 13222313111221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12211131322231 is a prime.

It is a super-2 number, since 2×12211131322231² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12211131322196 and 12211131322205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12211131322331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105565661115 + 6105565661116.

It is an arithmetic number, because the mean of its divisors is an integer number (6105565661116).

Almost surely, 2^{12211131322231} is an apocalyptic number.

12211131322231 is a deficient number, since it is larger than the sum of its proper divisors (1).

12211131322231 is an equidigital number, since it uses as much as digits as its factorization.

12211131322231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 25.

Adding to 12211131322231 its reverse (13222313111221), we get a palindrome (25433444433452).

The spelling of 12211131322231 in words is "twelve trillion, two hundred eleven billion, one hundred thirty-one million, three hundred twenty-two thousand, two hundred thirty-one".