211210197 has 16 divisors (see below), whose sum is σ = 311803392. Its totient is φ = 126094320.

The previous prime is 211210177. The next prime is 211210217. The reversal of 211210197 is 791012112.

It is an interprime number because it is at equal distance from previous prime (211210177) and next prime (211210217).

It is not a de Polignac number, because 211210197 - 2⁸ = 211209941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211210157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45553 + ... + 49974.

It is an arithmetic number, because the mean of its divisors is an integer number (19487712).

Almost surely, 2^211210197 is an apocalyptic number.

It is an amenable number.

211210197 is a deficient number, since it is larger than the sum of its proper divisors (100593195).

211210197 is a wasteful number, since it uses less digits than its factorization.

211210197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95608.

The product of its (nonzero) digits is 252, while the sum is 24.

The square root of 211210197 is about 14533.0725244182. The cubic root of 211210197 is about 595.5318052130.

The spelling of 211210197 in words is "two hundred eleven million, two hundred ten thousand, one hundred ninety-seven".