211854104018 has 8 divisors (see below), whose sum is σ = 318444583680. Its totient is φ = 105705909460.

The previous prime is 211854104017. The next prime is 211854104083. The reversal of 211854104018 is 810401458112.

It is a happy number.

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

It is a super-2 number, since 2×211854104018² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211854104017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110570078 + ... + 110571993.

It is an arithmetic number, because the mean of its divisors is an integer number (39805572960).

Almost surely, 2^211854104018 is an apocalyptic number.

211854104018 is a deficient number, since it is larger than the sum of its proper divisors (106590479662).

211854104018 is a wasteful number, since it uses less digits than its factorization.

211854104018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221142552.

The product of its (nonzero) digits is 10240, while the sum is 35.

The spelling of 211854104018 in words is "two hundred eleven billion, eight hundred fifty-four million, one hundred four thousand, eighteen".