102020201001217 has 2 divisors, whose sum is σ = 102020201001218. Its totient is φ = 102020201001216.

The previous prime is 102020201001167. The next prime is 102020201001223. The reversal of 102020201001217 is 712100102020201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52318039400641 + 49702161600576 = 7233121^2 + 7049976^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102020201001217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102020201001194 and 102020201001203.

It is not a weakly prime, because it can be changed into another prime (102020201001287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51010100500608 + 51010100500609.

It is an arithmetic number, because the mean of its divisors is an integer number (51010100500609).

Almost surely, 2^{102020201001217} is an apocalyptic number.

It is an amenable number.

102020201001217 is a deficient number, since it is larger than the sum of its proper divisors (1).

102020201001217 is an equidigital number, since it uses as much as digits as its factorization.

102020201001217 is an odious number, because the sum of its binary digits is odd.

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

Adding to 102020201001217 its reverse (712100102020201), we get a palindrome (814120303021418).

The spelling of 102020201001217 in words is "one hundred two trillion, twenty billion, two hundred one million, one thousand, two hundred seventeen".