211679121 has 16 divisors (see below), whose sum is σ = 299649024. Its totient is φ = 132459264.

The previous prime is 211679107. The next prime is 211679131. The reversal of 211679121 is 121976112.

It is not a de Polignac number, because 211679121 - 2⁷ = 211678993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211679131) 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, 14115 + ... + 24951.

It is an arithmetic number, because the mean of its divisors is an integer number (18728064).

Almost surely, 2^211679121 is an apocalyptic number.

It is an amenable number.

211679121 is a deficient number, since it is larger than the sum of its proper divisors (87969903).

211679121 is a wasteful number, since it uses less digits than its factorization.

211679121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11240.

The product of its digits is 1512, while the sum is 30.

The square root of 211679121 is about 14549.1965757563. The cubic root of 211679121 is about 595.9722081015.

The spelling of 211679121 in words is "two hundred eleven million, six hundred seventy-nine thousand, one hundred twenty-one".