12722771 has 2 divisors, whose sum is σ = 12722772. Its totient is φ = 12722770.

The previous prime is 12722767. The next prime is 12722791. The reversal of 12722771 is 17722721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12722771 - 2² = 12722767 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12722791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6361385 + 6361386.

It is an arithmetic number, because the mean of its divisors is an integer number (6361386).

Almost surely, 2^12722771 is an apocalyptic number.

12722771 is a deficient number, since it is larger than the sum of its proper divisors (1).

12722771 is an equidigital number, since it uses as much as digits as its factorization.

12722771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2744, while the sum is 29.

The square root of 12722771 is about 3566.8993537805. The cubic root of 12722771 is about 233.4500135255.

The spelling of 12722771 in words is "twelve million, seven hundred twenty-two thousand, seven hundred seventy-one".