12221405167 has 2 divisors, whose sum is σ = 12221405168. Its totient is φ = 12221405166.

The previous prime is 12221405117. The next prime is 12221405171. The reversal of 12221405167 is 76150412221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12221405167 - 2⁷ = 12221405039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12221405117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110702583 + 6110702584.

It is an arithmetic number, because the mean of its divisors is an integer number (6110702584).

Almost surely, 2^12221405167 is an apocalyptic number.

12221405167 is a deficient number, since it is larger than the sum of its proper divisors (1).

12221405167 is an equidigital number, since it uses as much as digits as its factorization.

12221405167 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 31.

Adding to 12221405167 its reverse (76150412221), we get a palindrome (88371817388).

The spelling of 12221405167 in words is "twelve billion, two hundred twenty-one million, four hundred five thousand, one hundred sixty-seven".