12717220277 has 24 divisors (see below), whose sum is σ = 14274927000. Its totient is φ = 11288429568.

The previous prime is 12717220261. The next prime is 12717220289. The reversal of 12717220277 is 77202271721.

It can be written as a sum of positive squares in 4 ways, for example, as 8788312516 + 3928907761 = 93746^2 + 62681^2 .

It is not a de Polignac number, because 12717220277 - 2⁴ = 12717220261 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12717220277.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12717220207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1400849 + ... + 1409897.

It is an arithmetic number, because the mean of its divisors is an integer number (594788625).

Almost surely, 2^12717220277 is an apocalyptic number.

12717220277 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12717220277 is a deficient number, since it is larger than the sum of its proper divisors (1557706723).

12717220277 is a wasteful number, since it uses less digits than its factorization.

12717220277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9333 (or 9314 counting only the distinct ones).

The product of its (nonzero) digits is 38416, while the sum is 38.

Adding to 12717220277 its reverse (77202271721), we get a palindrome (89919491998).

The spelling of 12717220277 in words is "twelve billion, seven hundred seventeen million, two hundred twenty thousand, two hundred seventy-seven".