211100130197 has 4 divisors (see below), whose sum is σ = 230291051136. Its totient is φ = 191909209260.

The previous prime is 211100130169. The next prime is 211100130209. The reversal of 211100130197 is 791031001112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 211100130197 - 2⁶ = 211100130133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211100130107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9595460453 + ... + 9595460474.

It is an arithmetic number, because the mean of its divisors is an integer number (57572762784).

Almost surely, 2^211100130197 is an apocalyptic number.

It is an amenable number.

211100130197 is a deficient number, since it is larger than the sum of its proper divisors (19190920939).

211100130197 is a wasteful number, since it uses less digits than its factorization.

211100130197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19190920938.

The product of its (nonzero) digits is 378, while the sum is 26.

The spelling of 211100130197 in words is "two hundred eleven billion, one hundred million, one hundred thirty thousand, one hundred ninety-seven".