12820122629 has 2 divisors, whose sum is σ = 12820122630. Its totient is φ = 12820122628.

The previous prime is 12820122619. The next prime is 12820122631. The reversal of 12820122629 is 92622102821.

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., 9919761604 + 2900361025 = 99598^2 + 53855^2 .

It is a cyclic number.

It is not a de Polignac number, because 12820122629 - 2¹² = 12820118533 is a prime.

Together with 12820122631, 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 (12820122619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6410061314 + 6410061315.

It is an arithmetic number, because the mean of its divisors is an integer number (6410061315).

Almost surely, 2^12820122629 is an apocalyptic number.

It is an amenable number.

12820122629 is a deficient number, since it is larger than the sum of its proper divisors (1).

12820122629 is an equidigital number, since it uses as much as digits as its factorization.

12820122629 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 35.

The spelling of 12820122629 in words is "twelve billion, eight hundred twenty million, one hundred twenty-two thousand, six hundred twenty-nine".