12722791 has 2 divisors, whose sum is σ = 12722792. Its totient is φ = 12722790.

The previous prime is 12722771. The next prime is 12722849. The reversal of 12722791 is 19722721.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (19722721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12722791 - 2¹³ = 12714599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12722771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6361395 + 6361396.

It is an arithmetic number, because the mean of its divisors is an integer number (6361396).

Almost surely, 2^12722791 is an apocalyptic number.

12722791 is a deficient number, since it is larger than the sum of its proper divisors (1).

12722791 is an equidigital number, since it uses as much as digits as its factorization.

12722791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3528, while the sum is 31.

The square root of 12722791 is about 3566.9021573348. The cubic root of 12722791 is about 233.4501358520.

The spelling of 12722791 in words is "twelve million, seven hundred twenty-two thousand, seven hundred ninety-one".