12268777321 has 2 divisors, whose sum is σ = 12268777322. Its totient is φ = 12268777320.

The previous prime is 12268777307. The next prime is 12268777441. The reversal of 12268777321 is 12377786221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6694512400 + 5574264921 = 81820^2 + 74661^2 .

It is a cyclic number.

It is not a de Polignac number, because 12268777321 - 2⁵ = 12268777289 is a prime.

It is not a weakly prime, because it can be changed into another prime (12268777021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6134388660 + 6134388661.

It is an arithmetic number, because the mean of its divisors is an integer number (6134388661).

Almost surely, 2^12268777321 is an apocalyptic number.

It is an amenable number.

12268777321 is a deficient number, since it is larger than the sum of its proper divisors (1).

12268777321 is an equidigital number, since it uses as much as digits as its factorization.

12268777321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 395136, while the sum is 46.

The spelling of 12268777321 in words is "twelve billion, two hundred sixty-eight million, seven hundred seventy-seven thousand, three hundred twenty-one".