211340440011 has 8 divisors (see below), whose sum is σ = 282213560464. Its totient is φ = 140680473120.

The previous prime is 211340440001. The next prime is 211340440037. The reversal of 211340440011 is 110044043112.

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

It is not a de Polignac number, because 211340440011 - 2⁷ = 211340439883 is a prime.

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 211340440011.

It is not an unprimeable number, because it can be changed into a prime (211340440001) 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, 53286076 + ... + 53290041.

It is an arithmetic number, because the mean of its divisors is an integer number (35276695058).

Almost surely, 2^211340440011 is an apocalyptic number.

211340440011 is a deficient number, since it is larger than the sum of its proper divisors (70873120453).

211340440011 is a wasteful number, since it uses less digits than its factorization.

211340440011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106576781.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 211340440011 its reverse (110044043112), we get a palindrome (321384483123).

The spelling of 211340440011 in words is "two hundred eleven billion, three hundred forty million, four hundred forty thousand, eleven".