202021210010017 has 2 divisors, whose sum is σ = 202021210010018. Its totient is φ = 202021210010016.

The previous prime is 202021210009933. The next prime is 202021210010027. The reversal of 202021210010017 is 710010012120202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 168611237831521 + 33409972178496 = 12985039^2 + 5780136^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202021210010017 is a prime.

It is a super-2 number, since 2×202021210010017² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 202021210009976 and 202021210010003.

It is not a weakly prime, because it can be changed into another prime (202021210010027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101010605005008 + 101010605005009.

It is an arithmetic number, because the mean of its divisors is an integer number (101010605005009).

Almost surely, 2^{202021210010017} is an apocalyptic number.

It is an amenable number.

202021210010017 is a deficient number, since it is larger than the sum of its proper divisors (1).

202021210010017 is an equidigital number, since it uses as much as digits as its factorization.

202021210010017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 19.

Adding to 202021210010017 its reverse (710010012120202), we get a palindrome (912031222130219).

The spelling of 202021210010017 in words is "two hundred two trillion, twenty-one billion, two hundred ten million, ten thousand, seventeen".