12197214409 has 2 divisors, whose sum is σ = 12197214410. Its totient is φ = 12197214408.

The previous prime is 12197214377. The next prime is 12197214427. The reversal of 12197214409 is 90441279121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11437660809 + 759553600 = 106947^2 + 27560^2 .

It is a cyclic number.

It is not a de Polignac number, because 12197214409 - 2⁵ = 12197214377 is a prime.

It is not a weakly prime, because it can be changed into another prime (12197214499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6098607204 + 6098607205.

It is an arithmetic number, because the mean of its divisors is an integer number (6098607205).

Almost surely, 2^12197214409 is an apocalyptic number.

It is an amenable number.

12197214409 is a deficient number, since it is larger than the sum of its proper divisors (1).

12197214409 is an equidigital number, since it uses as much as digits as its factorization.

12197214409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 40.

The spelling of 12197214409 in words is "twelve billion, one hundred ninety-seven million, two hundred fourteen thousand, four hundred nine".