211671221214 has 16 divisors (see below), whose sum is σ = 423347894928. Its totient is φ = 70556164992.

The previous prime is 211671221197. The next prime is 211671221221. The reversal of 211671221214 is 412122176112.

It is a super-2 number, since 2×211671221214² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 418764 + ... + 773760.

It is an arithmetic number, because the mean of its divisors is an integer number (26459243433).

Almost surely, 2^211671221214 is an apocalyptic number.

211671221214 is an abundant number, since it is smaller than the sum of its proper divisors (211676673714).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211671221214 is a wasteful number, since it uses less digits than its factorization.

211671221214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454379.

The product of its digits is 2688, while the sum is 30.

Adding to 211671221214 its reverse (412122176112), we get a palindrome (623793397326).

The spelling of 211671221214 in words is "two hundred eleven billion, six hundred seventy-one million, two hundred twenty-one thousand, two hundred fourteen".