12227664997 has 2 divisors, whose sum is σ = 12227664998. Its totient is φ = 12227664996.

The previous prime is 12227664931. The next prime is 12227665027. The reversal of 12227664997 is 79946672221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6476869441 + 5750795556 = 80479^2 + 75834^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12227664997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12227664797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6113832498 + 6113832499.

It is an arithmetic number, because the mean of its divisors is an integer number (6113832499).

Almost surely, 2^12227664997 is an apocalyptic number.

It is an amenable number.

12227664997 is a deficient number, since it is larger than the sum of its proper divisors (1).

12227664997 is an equidigital number, since it uses as much as digits as its factorization.

12227664997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4572288, while the sum is 55.

The spelling of 12227664997 in words is "twelve billion, two hundred twenty-seven million, six hundred sixty-four thousand, nine hundred ninety-seven".