201222201217 has 2 divisors, whose sum is σ = 201222201218. Its totient is φ = 201222201216.

The previous prime is 201222201161. The next prime is 201222201239. The reversal of 201222201217 is 712102222102.

It is an a-pointer prime, because the next prime (201222201239) can be obtained adding 201222201217 to its sum of digits (22).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117807519361 + 83414681856 = 343231^2 + 288816^2 .

It is a cyclic number.

It is not a de Polignac number, because 201222201217 - 2²⁷ = 201087983489 is a prime.

It is a super-2 number, since 2×201222201217² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (201222201277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100611100608 + 100611100609.

It is an arithmetic number, because the mean of its divisors is an integer number (100611100609).

Almost surely, 2^201222201217 is an apocalyptic number.

It is an amenable number.

201222201217 is a deficient number, since it is larger than the sum of its proper divisors (1).

201222201217 is an equidigital number, since it uses as much as digits as its factorization.

201222201217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 22.

Adding to 201222201217 its reverse (712102222102), we get a palindrome (913324423319).

The spelling of 201222201217 in words is "two hundred one billion, two hundred twenty-two million, two hundred one thousand, two hundred seventeen".