202221210102017 has 2 divisors, whose sum is σ = 202221210102018. Its totient is φ = 202221210102016.

The previous prime is 202221210101917. The next prime is 202221210102157. The reversal of 202221210102017 is 710201012122202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134860468347136 + 67360741754881 = 11612944^2 + 8207359^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202221210102017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202221210101983 and 202221210102001.

It is not a weakly prime, because it can be changed into another prime (202221210102617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101110605051008 + 101110605051009.

It is an arithmetic number, because the mean of its divisors is an integer number (101110605051009).

Almost surely, 2^{202221210102017} is an apocalyptic number.

It is an amenable number.

202221210102017 is a deficient number, since it is larger than the sum of its proper divisors (1).

202221210102017 is an equidigital number, since it uses as much as digits as its factorization.

202221210102017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 23.

Adding to 202221210102017 its reverse (710201012122202), we get a palindrome (912422222224219).

The spelling of 202221210102017 in words is "two hundred two trillion, two hundred twenty-one billion, two hundred ten million, one hundred two thousand, seventeen".