12722071 has 2 divisors, whose sum is σ = 12722072. Its totient is φ = 12722070.

The previous prime is 12722053. The next prime is 12722089. The reversal of 12722071 is 17022721.

It is a balanced prime because it is at equal distance from previous prime (12722053) and next prime (12722089).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12722071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12722011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6361035 + 6361036.

It is an arithmetic number, because the mean of its divisors is an integer number (6361036).

Almost surely, 2^12722071 is an apocalyptic number.

12722071 is a deficient number, since it is larger than the sum of its proper divisors (1).

12722071 is an equidigital number, since it uses as much as digits as its factorization.

12722071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 392, while the sum is 22.

The square root of 12722071 is about 3566.8012279913. The cubic root of 12722071 is about 233.4457320157.

Adding to 12722071 its reverse (17022721), we get a palindrome (29744792).

The spelling of 12722071 in words is "twelve million, seven hundred twenty-two thousand, seventy-one".