12221333 has 2 divisors, whose sum is σ = 12221334. Its totient is φ = 12221332.

The previous prime is 12221327. The next prime is 12221353. The reversal of 12221333 is 33312221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11135569 + 1085764 = 3337^2 + 1042^2 .

It is a cyclic number.

It is not a de Polignac number, because 12221333 - 2¹⁶ = 12155797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12221353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110666 + 6110667.

It is an arithmetic number, because the mean of its divisors is an integer number (6110667).

Almost surely, 2^12221333 is an apocalyptic number.

It is an amenable number.

12221333 is a deficient number, since it is larger than the sum of its proper divisors (1).

12221333 is an equidigital number, since it uses as much as digits as its factorization.

12221333 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 17.

The square root of 12221333 is about 3495.9023155689. The cubic root of 12221333 is about 230.3418545904.

Adding to 12221333 its reverse (33312221), we get a palindrome (45533554).

The spelling of 12221333 in words is "twelve million, two hundred twenty-one thousand, three hundred thirty-three".