12231112122211 has 2 divisors, whose sum is σ = 12231112122212. Its totient is φ = 12231112122210.

The previous prime is 12231112122197. The next prime is 12231112122269. The reversal of 12231112122211 is 11222121113221.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12231112122211 is a prime.

It is not a weakly prime, because it can be changed into another prime (12231112122011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6115556061105 + 6115556061106.

It is an arithmetic number, because the mean of its divisors is an integer number (6115556061106).

Almost surely, 2^{12231112122211} is an apocalyptic number.

12231112122211 is a deficient number, since it is larger than the sum of its proper divisors (1).

12231112122211 is an equidigital number, since it uses as much as digits as its factorization.

12231112122211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 192, while the sum is 22.

Adding to 12231112122211 its reverse (11222121113221), we get a palindrome (23453233235432).

The spelling of 12231112122211 in words is "twelve trillion, two hundred thirty-one billion, one hundred twelve million, one hundred twenty-two thousand, two hundred eleven".