12722520827 has 2 divisors, whose sum is σ = 12722520828. Its totient is φ = 12722520826.

The previous prime is 12722520823. The next prime is 12722520871. The reversal of 12722520827 is 72802522721.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (72802522721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12722520827 - 2² = 12722520823 is a prime.

It is not a weakly prime, because it can be changed into another prime (12722520823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6361260413 + 6361260414.

It is an arithmetic number, because the mean of its divisors is an integer number (6361260414).

Almost surely, 2^12722520827 is an apocalyptic number.

12722520827 is a deficient number, since it is larger than the sum of its proper divisors (1).

12722520827 is an equidigital number, since it uses as much as digits as its factorization.

12722520827 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62720, while the sum is 38.

The spelling of 12722520827 in words is "twelve billion, seven hundred twenty-two million, five hundred twenty thousand, eight hundred twenty-seven".