201210120122209 has 16 divisors (see below), whose sum is σ = 224619239123136. Its totient is φ = 180188167193760.

The previous prime is 201210120122191. The next prime is 201210120122287. The reversal of 201210120122209 is 902221021012102.

It is a happy number.

It is not a de Polignac number, because 201210120122209 - 2²¹ = 201210118025057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201210120522209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1128061132 + ... + 1128239485.

It is an arithmetic number, because the mean of its divisors is an integer number (14038702445196).

Almost surely, 2^{201210120122209} is an apocalyptic number.

It is an amenable number.

201210120122209 is a deficient number, since it is larger than the sum of its proper divisors (23409119000927).

201210120122209 is an equidigital number, since it uses as much as digits as its factorization.

201210120122209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2256300717 (or 2256300695 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 25.

The spelling of 201210120122209 in words is "two hundred one trillion, two hundred ten billion, one hundred twenty million, one hundred twenty-two thousand, two hundred nine".