12287279117 has 2 divisors, whose sum is σ = 12287279118. Its totient is φ = 12287279116.

The previous prime is 12287279093. The next prime is 12287279131. The reversal of 12287279117 is 71197278221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7346032681 + 4941246436 = 85709^2 + 70294^2 .

It is a cyclic number.

It is not a de Polignac number, because 12287279117 - 2¹⁴ = 12287262733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12287279617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6143639558 + 6143639559.

It is an arithmetic number, because the mean of its divisors is an integer number (6143639559).

Almost surely, 2^12287279117 is an apocalyptic number.

It is an amenable number.

12287279117 is a deficient number, since it is larger than the sum of its proper divisors (1).

12287279117 is an equidigital number, since it uses as much as digits as its factorization.

12287279117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 197568, while the sum is 47.

The spelling of 12287279117 in words is "twelve billion, two hundred eighty-seven million, two hundred seventy-nine thousand, one hundred seventeen".