12223233221 has 2 divisors, whose sum is σ = 12223233222. Its totient is φ = 12223233220.

The previous prime is 12223233181. The next prime is 12223233233. The reversal of 12223233221 is 12233232221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12167193025 + 56040196 = 110305^2 + 7486^2 .

It is a cyclic number.

It is not a de Polignac number, because 12223233221 - 2¹⁸ = 12222971077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12223233521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6111616610 + 6111616611.

It is an arithmetic number, because the mean of its divisors is an integer number (6111616611).

Almost surely, 2^12223233221 is an apocalyptic number.

It is an amenable number.

12223233221 is a deficient number, since it is larger than the sum of its proper divisors (1).

12223233221 is an equidigital number, since it uses as much as digits as its factorization.

12223233221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 23.

Adding to 12223233221 its reverse (12233232221), we get a palindrome (24456465442).

The spelling of 12223233221 in words is "twelve billion, two hundred twenty-three million, two hundred thirty-three thousand, two hundred twenty-one".