12274278197 has 2 divisors, whose sum is σ = 12274278198. Its totient is φ = 12274278196.

The previous prime is 12274278193. The next prime is 12274278223. The reversal of 12274278197 is 79187247221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6355437841 + 5918840356 = 79721^2 + 76934^2 .

It is a cyclic number.

It is not a de Polignac number, because 12274278197 - 2² = 12274278193 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12274278193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6137139098 + 6137139099.

It is an arithmetic number, because the mean of its divisors is an integer number (6137139099).

Almost surely, 2^12274278197 is an apocalyptic number.

It is an amenable number.

12274278197 is a deficient number, since it is larger than the sum of its proper divisors (1).

12274278197 is an equidigital number, since it uses as much as digits as its factorization.

12274278197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 790272, while the sum is 50.

The spelling of 12274278197 in words is "twelve billion, two hundred seventy-four million, two hundred seventy-eight thousand, one hundred ninety-seven".