211847980197 has 8 divisors (see below), whose sum is σ = 322815969856. Its totient is φ = 121055988672.

The previous prime is 211847980189. The next prime is 211847980217. The reversal of 211847980197 is 791089748112.

211847980197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 211847980197 - 2³ = 211847980189 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 (211847980177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5043999508 + ... + 5043999549.

It is an arithmetic number, because the mean of its divisors is an integer number (40351996232).

Almost surely, 2^211847980197 is an apocalyptic number.

It is an amenable number.

211847980197 is a deficient number, since it is larger than the sum of its proper divisors (110967989659).

211847980197 is a wasteful number, since it uses less digits than its factorization.

211847980197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10087999067.

The product of its (nonzero) digits is 2032128, while the sum is 57.

The spelling of 211847980197 in words is "two hundred eleven billion, eight hundred forty-seven million, nine hundred eighty thousand, one hundred ninety-seven".