1001202102161 has 2 divisors, whose sum is σ = 1001202102162. Its totient is φ = 1001202102160.

The previous prime is 1001202102143. The next prime is 1001202102181. The reversal of 1001202102161 is 1612012021001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 995285569600 + 5916532561 = 997640^2 + 76919^2 .

It is an emirp because it is prime and its reverse (1612012021001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1001202102161 - 2²⁶ = 1001134993297 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1001202102181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500601051080 + 500601051081.

It is an arithmetic number, because the mean of its divisors is an integer number (500601051081).

Almost surely, 2^{1001202102161} is an apocalyptic number.

It is an amenable number.

1001202102161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001202102161 is an equidigital number, since it uses as much as digits as its factorization.

1001202102161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 1001202102161 its reverse (1612012021001), we get a palindrome (2613214123162).

The spelling of 1001202102161 in words is "one trillion, one billion, two hundred two million, one hundred two thousand, one hundred sixty-one".