12452226989 has 2 divisors, whose sum is σ = 12452226990. Its totient is φ = 12452226988.

The previous prime is 12452226949. The next prime is 12452226991. The reversal of 12452226989 is 98962225421.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11001912100 + 1450314889 = 104890^2 + 38083^2 .

It is an emirp because it is prime and its reverse (98962225421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12452226989 - 2²⁸ = 12183791533 is a prime.

It is a super-2 number, since 2×12452226989² (a number of 21 digits) contains 22 as substring.

Together with 12452226991, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12452226949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6226113494 + 6226113495.

It is an arithmetic number, because the mean of its divisors is an integer number (6226113495).

Almost surely, 2^12452226989 is an apocalyptic number.

It is an amenable number.

12452226989 is a deficient number, since it is larger than the sum of its proper divisors (1).

12452226989 is an equidigital number, since it uses as much as digits as its factorization.

12452226989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1244160, while the sum is 50.

The spelling of 12452226989 in words is "twelve billion, four hundred fifty-two million, two hundred twenty-six thousand, nine hundred eighty-nine".