211334161 has 16 divisors (see below), whose sum is σ = 223534080. Its totient is φ = 199517760.

The previous prime is 211334153. The next prime is 211334171. The reversal of 211334161 is 161433112.

It is a cyclic number.

It is not a de Polignac number, because 211334161 - 2³ = 211334153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211334111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 481180 + ... + 481618.

It is an arithmetic number, because the mean of its divisors is an integer number (13970880).

Almost surely, 2^211334161 is an apocalyptic number.

It is an amenable number.

211334161 is a deficient number, since it is larger than the sum of its proper divisors (12199919).

211334161 is a wasteful number, since it uses less digits than its factorization.

211334161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816.

The product of its digits is 432, while the sum is 22.

The square root of 211334161 is about 14537.3367918612. The cubic root of 211334161 is about 595.6482927491.

Adding to 211334161 its reverse (161433112), we get a palindrome (372767273).

The spelling of 211334161 in words is "two hundred eleven million, three hundred thirty-four thousand, one hundred sixty-one".