12211412321 has 2 divisors, whose sum is σ = 12211412322. Its totient is φ = 12211412320.

The previous prime is 12211412237. The next prime is 12211412357. The reversal of 12211412321 is 12321411221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11903901025 + 307511296 = 109105^2 + 17536^2 .

It is a cyclic number.

It is not a de Polignac number, because 12211412321 - 2¹⁰ = 12211411297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12211412293 and 12211412302.

It is not a weakly prime, because it can be changed into another prime (12211412221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105706160 + 6105706161.

It is an arithmetic number, because the mean of its divisors is an integer number (6105706161).

Almost surely, 2^12211412321 is an apocalyptic number.

It is an amenable number.

12211412321 is a deficient number, since it is larger than the sum of its proper divisors (1).

12211412321 is an equidigital number, since it uses as much as digits as its factorization.

12211412321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 192, while the sum is 20.

Adding to 12211412321 its reverse (12321411221), we get a palindrome (24532823542).

The spelling of 12211412321 in words is "twelve billion, two hundred eleven million, four hundred twelve thousand, three hundred twenty-one".