12201000122009 has 2 divisors, whose sum is σ = 12201000122010. Its totient is φ = 12201000122008.

The previous prime is 12201000121951. The next prime is 12201000122033. The reversal of 12201000122009 is 90022100010221.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6174588856384 + 6026411265625 = 2484872^2 + 2454875^2 .

It is an emirp because it is prime and its reverse (90022100010221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12201000122009 - 2⁸ = 12201000121753 is a prime.

It is not a weakly prime, because it can be changed into another prime (12201000125009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6100500061004 + 6100500061005.

It is an arithmetic number, because the mean of its divisors is an integer number (6100500061005).

Almost surely, 2^{12201000122009} is an apocalyptic number.

It is an amenable number.

12201000122009 is a deficient number, since it is larger than the sum of its proper divisors (1).

12201000122009 is an equidigital number, since it uses as much as digits as its factorization.

12201000122009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 12201000122009 in words is "twelve trillion, two hundred one billion, one hundred twenty-two thousand, nine".