1020201009917 has 2 divisors, whose sum is σ = 1020201009918. Its totient is φ = 1020201009916.

The previous prime is 1020201009889. The next prime is 1020201010007. The reversal of 1020201009917 is 7199001020201.

1020201009917 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 988381942276 + 31819067641 = 994174^2 + 178379^2 .

It is an emirp because it is prime and its reverse (7199001020201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1020201009917 - 2¹⁶ = 1020200944381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020201009517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510100504958 + 510100504959.

It is an arithmetic number, because the mean of its divisors is an integer number (510100504959).

Almost surely, 2^{1020201009917} is an apocalyptic number.

It is an amenable number.

1020201009917 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020201009917 is an equidigital number, since it uses as much as digits as its factorization.

1020201009917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 32.

The spelling of 1020201009917 in words is "one trillion, twenty billion, two hundred one million, nine thousand, nine hundred seventeen".