211122111013 has 4 divisors (see below), whose sum is σ = 230315030208. Its totient is φ = 191929191820.

The previous prime is 211122110977. The next prime is 211122111041. The reversal of 211122111013 is 310111221112.

It is a happy number.

211122111013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211122111013 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 (211122112013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9596459581 + ... + 9596459602.

It is an arithmetic number, because the mean of its divisors is an integer number (57578757552).

Almost surely, 2^211122111013 is an apocalyptic number.

It is an amenable number.

211122111013 is a deficient number, since it is larger than the sum of its proper divisors (19192919195).

211122111013 is a wasteful number, since it uses less digits than its factorization.

211122111013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19192919194.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 211122111013 its reverse (310111221112), we get a palindrome (521233332125).

The spelling of 211122111013 in words is "two hundred eleven billion, one hundred twenty-two million, one hundred eleven thousand, thirteen".