211979444223 has 8 divisors (see below), whose sum is σ = 283559909248. Its totient is φ = 140859304344.

The previous prime is 211979444191. The next prime is 211979444249. The reversal of 211979444223 is 322444979112.

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

It is not a de Polignac number, because 211979444223 - 2⁵ = 211979444191 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 (211979444263) 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, 115080211 + ... + 115082052.

It is an arithmetic number, because the mean of its divisors is an integer number (35444988656).

Almost surely, 2^211979444223 is an apocalyptic number.

211979444223 is a deficient number, since it is larger than the sum of its proper divisors (71580465025).

211979444223 is a wasteful number, since it uses less digits than its factorization.

211979444223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230162573.

The product of its digits is 870912, while the sum is 48.

The spelling of 211979444223 in words is "two hundred eleven billion, nine hundred seventy-nine million, four hundred forty-four thousand, two hundred twenty-three".