211144122011 has 8 divisors (see below), whose sum is σ = 211310187264. Its totient is φ = 210978123520.

The previous prime is 211144121999. The next prime is 211144122019. The reversal of 211144122011 is 110221441112.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211144122011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211144122019) 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, 7621661 + ... + 7649313.

It is an arithmetic number, because the mean of its divisors is an integer number (26413773408).

Almost surely, 2^211144122011 is an apocalyptic number.

211144122011 is a deficient number, since it is larger than the sum of its proper divisors (166065253).

211144122011 is a wasteful number, since it uses less digits than its factorization.

211144122011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33381.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 211144122011 its reverse (110221441112), we get a palindrome (321365563123).

The spelling of 211144122011 in words is "two hundred eleven billion, one hundred forty-four million, one hundred twenty-two thousand, eleven".