20202133120217 has 2 divisors, whose sum is σ = 20202133120218. Its totient is φ = 20202133120216.

The previous prime is 20202133120121. The next prime is 20202133120249. The reversal of 20202133120217 is 71202133120202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12502595881801 + 7699537238416 = 3535901^2 + 2774804^2 .

It is a cyclic number.

It is not a de Polignac number, because 20202133120217 - 2⁴⁰ = 19102621492441 is a prime.

It is not a weakly prime, because it can be changed into another prime (20202133120417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10101066560108 + 10101066560109.

It is an arithmetic number, because the mean of its divisors is an integer number (10101066560109).

Almost surely, 2^{20202133120217} is an apocalyptic number.

It is an amenable number.

20202133120217 is a deficient number, since it is larger than the sum of its proper divisors (1).

20202133120217 is an equidigital number, since it uses as much as digits as its factorization.

20202133120217 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 26.

Adding to 20202133120217 its reverse (71202133120202), we get a palindrome (91404266240419).

The spelling of 20202133120217 in words is "twenty trillion, two hundred two billion, one hundred thirty-three million, one hundred twenty thousand, two hundred seventeen".