201122212117 has 2 divisors, whose sum is σ = 201122212118. Its totient is φ = 201122212116.

The previous prime is 201122212111. The next prime is 201122212139. The reversal of 201122212117 is 711212221102.

It is an a-pointer prime, because the next prime (201122212139) can be obtained adding 201122212117 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 169963254756 + 31158957361 = 412266^2 + 176519^2 .

It is a cyclic number.

It is not a de Polignac number, because 201122212117 - 2³⁵ = 166762473749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201122212111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100561106058 + 100561106059.

It is an arithmetic number, because the mean of its divisors is an integer number (100561106059).

Almost surely, 2^201122212117 is an apocalyptic number.

It is an amenable number.

201122212117 is a deficient number, since it is larger than the sum of its proper divisors (1).

201122212117 is an equidigital number, since it uses as much as digits as its factorization.

201122212117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 22.

Adding to 201122212117 its reverse (711212221102), we get a palindrome (912334433219).

The spelling of 201122212117 in words is "two hundred one billion, one hundred twenty-two million, two hundred twelve thousand, one hundred seventeen".