211121197 has 8 divisors (see below), whose sum is σ = 242819456. Its totient is φ = 179807472.

The previous prime is 211121173. The next prime is 211121203. The reversal of 211121197 is 791121112.

211121197 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 a cyclic number.

It is not a de Polignac number, because 211121197 - 2¹¹ = 211119149 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 (211121107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94953 + ... + 97150.

It is an arithmetic number, because the mean of its divisors is an integer number (30352432).

Almost surely, 2^211121197 is an apocalyptic number.

It is an amenable number.

211121197 is a deficient number, since it is larger than the sum of its proper divisors (31698259).

211121197 is a wasteful number, since it uses less digits than its factorization.

211121197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192267.

The product of its digits is 252, while the sum is 25.

The square root of 211121197 is about 14530.0102202304. The cubic root of 211121197 is about 595.4481448313.

The spelling of 211121197 in words is "two hundred eleven million, one hundred twenty-one thousand, one hundred ninety-seven".