210102212197 has 2 divisors, whose sum is σ = 210102212198. Its totient is φ = 210102212196.

The previous prime is 210102212191. The next prime is 210102212213. The reversal of 210102212197 is 791212201012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121470372676 + 88631839521 = 348526^2 + 297711^2 .

It is a cyclic number.

It is not a de Polignac number, because 210102212197 - 2⁷ = 210102212069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210102212191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105051106098 + 105051106099.

It is an arithmetic number, because the mean of its divisors is an integer number (105051106099).

Almost surely, 2^210102212197 is an apocalyptic number.

It is an amenable number.

210102212197 is a deficient number, since it is larger than the sum of its proper divisors (1).

210102212197 is an equidigital number, since it uses as much as digits as its factorization.

210102212197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 28.

The spelling of 210102212197 in words is "two hundred ten billion, one hundred two million, two hundred twelve thousand, one hundred ninety-seven".