12242226221 has 2 divisors, whose sum is σ = 12242226222. Its totient is φ = 12242226220.

The previous prime is 12242226193. The next prime is 12242226233. The reversal of 12242226221 is 12262224221.

It is a happy number.

12242226221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10896436996 + 1345789225 = 104386^2 + 36685^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12242226221 is a prime.

It is a super-2 number, since 2×12242226221² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12242226251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6121113110 + 6121113111.

It is an arithmetic number, because the mean of its divisors is an integer number (6121113111).

Almost surely, 2^12242226221 is an apocalyptic number.

It is an amenable number.

12242226221 is a deficient number, since it is larger than the sum of its proper divisors (1).

12242226221 is an equidigital number, since it uses as much as digits as its factorization.

12242226221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3072, while the sum is 26.

The spelling of 12242226221 in words is "twelve billion, two hundred forty-two million, two hundred twenty-six thousand, two hundred twenty-one".