12201111210209 has 2 divisors, whose sum is σ = 12201111210210. Its totient is φ = 12201111210208.

The previous prime is 12201111210191. The next prime is 12201111210229. The reversal of 12201111210209 is 90201211110221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12061312243600 + 139798966609 = 3472940^2 + 373897^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12201111210209 is a prime.

It is a super-2 number, since 2×12201111210209² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12201111210229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6100555605104 + 6100555605105.

It is an arithmetic number, because the mean of its divisors is an integer number (6100555605105).

Almost surely, 2^{12201111210209} is an apocalyptic number.

It is an amenable number.

12201111210209 is a deficient number, since it is larger than the sum of its proper divisors (1).

12201111210209 is an equidigital number, since it uses as much as digits as its factorization.

12201111210209 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 23.

The spelling of 12201111210209 in words is "twelve trillion, two hundred one billion, one hundred eleven million, two hundred ten thousand, two hundred nine".