1001002112197 has 2 divisors, whose sum is σ = 1001002112198. Its totient is φ = 1001002112196.

The previous prime is 1001002112161. The next prime is 1001002112237. The reversal of 1001002112197 is 7912112001001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 993701947716 + 7300164481 = 996846^2 + 85441^2 .

It is a cyclic number.

It is not a de Polignac number, because 1001002112197 - 2²⁷ = 1000867894469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001002112137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500501056098 + 500501056099.

It is an arithmetic number, because the mean of its divisors is an integer number (500501056099).

Almost surely, 2^{1001002112197} is an apocalyptic number.

It is an amenable number.

1001002112197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001002112197 is an equidigital number, since it uses as much as digits as its factorization.

1001002112197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 25.

Adding to 1001002112197 its reverse (7912112001001), we get a palindrome (8913114113198).

The spelling of 1001002112197 in words is "one trillion, one billion, two million, one hundred twelve thousand, one hundred ninety-seven".