12221413 has 2 divisors, whose sum is σ = 12221414. Its totient is φ = 12221412.

The previous prime is 12221401. The next prime is 12221431. The reversal of 12221413 is 31412221.

Together with next prime (12221431) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11512449 + 708964 = 3393^2 + 842^2 .

It is an emirp because it is prime and its reverse (31412221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12221413 - 2¹³ = 12213221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12221483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110706 + 6110707.

It is an arithmetic number, because the mean of its divisors is an integer number (6110707).

Almost surely, 2^12221413 is an apocalyptic number.

It is an amenable number.

12221413 is a deficient number, since it is larger than the sum of its proper divisors (1).

12221413 is an equidigital number, since it uses as much as digits as its factorization.

12221413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96, while the sum is 16.

The square root of 12221413 is about 3495.9137575175. The cubic root of 12221413 is about 230.3423571900.

Adding to 12221413 its reverse (31412221), we get a palindrome (43633634).

The spelling of 12221413 in words is "twelve million, two hundred twenty-one thousand, four hundred thirteen".