211121311113 has 16 divisors (see below), whose sum is σ = 318073540800. Its totient is φ = 138361988160.

The previous prime is 211121311091. The next prime is 211121311123. The reversal of 211121311113 is 311113121112.

It is not a de Polignac number, because 211121311113 - 2⁹ = 211121310601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211121311123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66263728 + ... + 66266913.

It is an arithmetic number, because the mean of its divisors is an integer number (19879596300).

Almost surely, 2^211121311113 is an apocalyptic number.

It is an amenable number.

211121311113 is a deficient number, since it is larger than the sum of its proper divisors (106952229687).

211121311113 is a wasteful number, since it uses less digits than its factorization.

211121311113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132530709 (or 132530703 counting only the distinct ones).

The product of its digits is 36, while the sum is 18.

Adding to 211121311113 its reverse (311113121112), we get a palindrome (522234432225).

The spelling of 211121311113 in words is "two hundred eleven billion, one hundred twenty-one million, three hundred eleven thousand, one hundred thirteen".