20002211022197 has 2 divisors, whose sum is σ = 20002211022198. Its totient is φ = 20002211022196.

The previous prime is 20002211022161. The next prime is 20002211022223. The reversal of 20002211022197 is 79122011220002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16700307733201 + 3301903288996 = 4086601^2 + 1817114^2 .

It is a cyclic number.

It is not a de Polignac number, because 20002211022197 - 2⁶ = 20002211022133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20002211022107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001105511098 + 10001105511099.

It is an arithmetic number, because the mean of its divisors is an integer number (10001105511099).

Almost surely, 2^{20002211022197} is an apocalyptic number.

It is an amenable number.

20002211022197 is a deficient number, since it is larger than the sum of its proper divisors (1).

20002211022197 is an equidigital number, since it uses as much as digits as its factorization.

20002211022197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 29.

Adding to 20002211022197 its reverse (79122011220002), we get a palindrome (99124222242199).

The spelling of 20002211022197 in words is "twenty trillion, two billion, two hundred eleven million, twenty-two thousand, one hundred ninety-seven".