1010202120197 has 2 divisors, whose sum is σ = 1010202120198. Its totient is φ = 1010202120196.

The previous prime is 1010202120167. The next prime is 1010202120233. The reversal of 1010202120197 is 7910212020101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 740883676516 + 269318443681 = 860746^2 + 518959^2 .

It is a cyclic number.

It is not a de Polignac number, because 1010202120197 - 2¹² = 1010202116101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1010202120127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505101060098 + 505101060099.

It is an arithmetic number, because the mean of its divisors is an integer number (505101060099).

Almost surely, 2^{1010202120197} is an apocalyptic number.

It is an amenable number.

1010202120197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1010202120197 is an equidigital number, since it uses as much as digits as its factorization.

1010202120197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 26.

Adding to 1010202120197 its reverse (7910212020101), we get a palindrome (8920414140298).

The spelling of 1010202120197 in words is "one trillion, ten billion, two hundred two million, one hundred twenty thousand, one hundred ninety-seven".