12221032169 has 2 divisors, whose sum is σ = 12221032170. Its totient is φ = 12221032168.

The previous prime is 12221032147. The next prime is 12221032171. The reversal of 12221032169 is 96123012221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10274457769 + 1946574400 = 101363^2 + 44120^2 .

It is a cyclic number.

It is not a de Polignac number, because 12221032169 - 2²⁸ = 11952596713 is a prime.

It is a super-2 number, since 2×12221032169² (a number of 21 digits) contains 22 as substring.

Together with 12221032171, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12221032969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110516084 + 6110516085.

It is an arithmetic number, because the mean of its divisors is an integer number (6110516085).

Almost surely, 2^12221032169 is an apocalyptic number.

It is an amenable number.

12221032169 is a deficient number, since it is larger than the sum of its proper divisors (1).

12221032169 is an equidigital number, since it uses as much as digits as its factorization.

12221032169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The spelling of 12221032169 in words is "twelve billion, two hundred twenty-one million, thirty-two thousand, one hundred sixty-nine".