20122202117 has 2 divisors, whose sum is σ = 20122202118. Its totient is φ = 20122202116.

The previous prime is 20122202081. The next prime is 20122202141. The reversal of 20122202117 is 71120222102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19035444961 + 1086757156 = 137969^2 + 32966^2 .

It is a cyclic number.

It is not a de Polignac number, because 20122202117 - 2¹² = 20122198021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20121202117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10061101058 + 10061101059.

It is an arithmetic number, because the mean of its divisors is an integer number (10061101059).

Almost surely, 2^20122202117 is an apocalyptic number.

It is an amenable number.

20122202117 is a deficient number, since it is larger than the sum of its proper divisors (1).

20122202117 is an equidigital number, since it uses as much as digits as its factorization.

20122202117 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 20.

Adding to 20122202117 its reverse (71120222102), we get a palindrome (91242424219).

The spelling of 20122202117 in words is "twenty billion, one hundred twenty-two million, two hundred two thousand, one hundred seventeen".