12211201232311 has 2 divisors, whose sum is σ = 12211201232312. Its totient is φ = 12211201232310.

The previous prime is 12211201232287. The next prime is 12211201232333. The reversal of 12211201232311 is 11323210211221.

It is a happy number.

It is an a-pointer prime, because the next prime (12211201232333) can be obtained adding 12211201232311 to its sum of digits (22).

It is a strong prime.

It is an emirp because it is prime and its reverse (11323210211221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12211201232311 - 2¹⁹ = 12211200708023 is a prime.

It is a super-2 number, since 2×12211201232311² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12211291232311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105600616155 + 6105600616156.

It is an arithmetic number, because the mean of its divisors is an integer number (6105600616156).

Almost surely, 2^{12211201232311} is an apocalyptic number.

12211201232311 is a deficient number, since it is larger than the sum of its proper divisors (1).

12211201232311 is an equidigital number, since it uses as much as digits as its factorization.

12211201232311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 12211201232311 its reverse (11323210211221), we get a palindrome (23534411443532).

The spelling of 12211201232311 in words is "twelve trillion, two hundred eleven billion, two hundred one million, two hundred thirty-two thousand, three hundred eleven".