201122022217 has 2 divisors, whose sum is σ = 201122022218. Its totient is φ = 201122022216.

The previous prime is 201122022149. The next prime is 201122022307. The reversal of 201122022217 is 712220221102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135614691081 + 65507331136 = 368259^2 + 255944^2 .

It is a cyclic number.

It is not a de Polignac number, because 201122022217 - 2¹⁵ = 201121989449 is a prime.

It is not a weakly prime, because it can be changed into another prime (201122020217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100561011108 + 100561011109.

It is an arithmetic number, because the mean of its divisors is an integer number (100561011109).

Almost surely, 2^201122022217 is an apocalyptic number.

It is an amenable number.

201122022217 is a deficient number, since it is larger than the sum of its proper divisors (1).

201122022217 is an equidigital number, since it uses as much as digits as its factorization.

201122022217 is an evil number, because the sum of its binary digits is even.

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

Adding to 201122022217 its reverse (712220221102), we get a palindrome (913342243319).

The spelling of 201122022217 in words is "two hundred one billion, one hundred twenty-two million, twenty-two thousand, two hundred seventeen".