2020102121017 has 2 divisors, whose sum is σ = 2020102121018. Its totient is φ = 2020102121016.

The previous prime is 2020102121003. The next prime is 2020102121057. The reversal of 2020102121017 is 7101212010202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1910557008441 + 109545112576 = 1382229^2 + 330976^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2020102121017 is a prime.

It is a super-2 number, since 2×2020102121017² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2020102120985 and 2020102121003.

It is not a weakly prime, because it can be changed into another prime (2020102121057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010051060508 + 1010051060509.

It is an arithmetic number, because the mean of its divisors is an integer number (1010051060509).

Almost surely, 2^{2020102121017} is an apocalyptic number.

It is an amenable number.

2020102121017 is a deficient number, since it is larger than the sum of its proper divisors (1).

2020102121017 is an equidigital number, since it uses as much as digits as its factorization.

2020102121017 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 2020102121017 its reverse (7101212010202), we get a palindrome (9121314131219).

The spelling of 2020102121017 in words is "two trillion, twenty billion, one hundred two million, one hundred twenty-one thousand, seventeen".