211434221111 has 8 divisors (see below), whose sum is σ = 212306724864. Its totient is φ = 210562952920.

The previous prime is 211434221101. The next prime is 211434221189. The reversal of 211434221111 is 111122434112.

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

It is a cyclic number.

It is not a de Polignac number, because 211434221111 - 2¹⁰ = 211434220087 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 (211434221101) 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, 34850 + ... + 651216.

It is an arithmetic number, because the mean of its divisors is an integer number (26538340608).

Almost surely, 2^211434221111 is an apocalyptic number.

211434221111 is a deficient number, since it is larger than the sum of its proper divisors (872503753).

211434221111 is a wasteful number, since it uses less digits than its factorization.

211434221111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617781.

The product of its digits is 384, while the sum is 23.

Adding to 211434221111 its reverse (111122434112), we get a palindrome (322556655223).

The spelling of 211434221111 in words is "two hundred eleven billion, four hundred thirty-four million, two hundred twenty-one thousand, one hundred eleven".