12221012227 has 2 divisors, whose sum is σ = 12221012228. Its totient is φ = 12221012226.

The previous prime is 12221012137. The next prime is 12221012267. The reversal of 12221012227 is 72221012221.

12221012227 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 is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12221012227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12221012198 and 12221012207.

It is not a weakly prime, because it can be changed into another prime (12221012267) 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, 6110506113 + 6110506114.

It is an arithmetic number, because the mean of its divisors is an integer number (6110506114).

Almost surely, 2^12221012227 is an apocalyptic number.

12221012227 is a deficient number, since it is larger than the sum of its proper divisors (1).

12221012227 is an equidigital number, since it uses as much as digits as its factorization.

12221012227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 22.

Adding to 12221012227 its reverse (72221012221), we get a palindrome (84442024448).

The spelling of 12221012227 in words is "twelve billion, two hundred twenty-one million, twelve thousand, two hundred twenty-seven".