12197802271 has 2 divisors, whose sum is σ = 12197802272. Its totient is φ = 12197802270.

The previous prime is 12197802251. The next prime is 12197802347. The reversal of 12197802271 is 17220879121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12197802271 - 2²⁷ = 12063584543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12197802241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6098901135 + 6098901136.

It is an arithmetic number, because the mean of its divisors is an integer number (6098901136).

Almost surely, 2^12197802271 is an apocalyptic number.

12197802271 is a deficient number, since it is larger than the sum of its proper divisors (1).

12197802271 is an equidigital number, since it uses as much as digits as its factorization.

12197802271 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 40.

The spelling of 12197802271 in words is "twelve billion, one hundred ninety-seven million, eight hundred two thousand, two hundred seventy-one".