211122311311 has 8 divisors (see below), whose sum is σ = 213106538960. Its totient is φ = 209144731968.

The previous prime is 211122311273. The next prime is 211122311339. The reversal of 211122311311 is 113113221112.

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 211122311311 - 2⁹ = 211122310799 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 (211122311711) 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, 1598256 + ... + 1725301.

It is an arithmetic number, because the mean of its divisors is an integer number (26638317370).

Almost surely, 2^211122311311 is an apocalyptic number.

211122311311 is a deficient number, since it is larger than the sum of its proper divisors (1984227649).

211122311311 is a wasteful number, since it uses less digits than its factorization.

211122311311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3324153.

The product of its digits is 72, while the sum is 19.

Adding to 211122311311 its reverse (113113221112), we get a palindrome (324235532423).

The spelling of 211122311311 in words is "two hundred eleven billion, one hundred twenty-two million, three hundred eleven thousand, three hundred eleven".