211443424111 has 8 divisors (see below), whose sum is σ = 222598730880. Its totient is φ = 200290787928.

The previous prime is 211443424103. The next prime is 211443424139. The reversal of 211443424111 is 111424344112.

It is a happy number.

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 211443424111 - 2³ = 211443424103 is a prime.

It is a super-2 number, since 2×211443424111² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 211443424111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211443494111) 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, 504091 + ... + 822796.

It is an arithmetic number, because the mean of its divisors is an integer number (27824841360).

Almost surely, 2^211443424111 is an apocalyptic number.

211443424111 is a deficient number, since it is larger than the sum of its proper divisors (11155306769).

211443424111 is a wasteful number, since it uses less digits than its factorization.

211443424111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1335293.

The product of its digits is 3072, while the sum is 28.

Adding to 211443424111 its reverse (111424344112), we get a palindrome (322867768223).

The spelling of 211443424111 in words is "two hundred eleven billion, four hundred forty-three million, four hundred twenty-four thousand, one hundred eleven".