210002120197 has 2 divisors, whose sum is σ = 210002120198. Its totient is φ = 210002120196.

The previous prime is 210002120179. The next prime is 210002120203. The reversal of 210002120197 is 791021200012.

Together with previous prime (210002120179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119020860036 + 90981260161 = 344994^2 + 301631^2 .

It is a cyclic number.

It is not a de Polignac number, because 210002120197 - 2²⁷ = 209867902469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210002120177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105001060098 + 105001060099.

It is an arithmetic number, because the mean of its divisors is an integer number (105001060099).

Almost surely, 2^210002120197 is an apocalyptic number.

It is an amenable number.

210002120197 is a deficient number, since it is larger than the sum of its proper divisors (1).

210002120197 is an equidigital number, since it uses as much as digits as its factorization.

210002120197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 25.

The spelling of 210002120197 in words is "two hundred ten billion, two million, one hundred twenty thousand, one hundred ninety-seven".