111210212222111 has 8 divisors (see below), whose sum is σ = 111289442883360. Its totient is φ = 111130987661568.

The previous prime is 111210212222093. The next prime is 111210212222147. The reversal of 111210212222111 is 111222212012111.

It is a happy number.

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 111210212222111 - 2³⁰ = 111209138480287 is a prime.

It is a super-2 number, since 2×111210212222111² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111210212225111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35261750 + ... + 38285916.

It is an arithmetic number, because the mean of its divisors is an integer number (13911180360420).

Almost surely, 2^{111210212222111} is an apocalyptic number.

111210212222111 is a deficient number, since it is larger than the sum of its proper divisors (79230661249).

111210212222111 is a wasteful number, since it uses less digits than its factorization.

111210212222111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3050353.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 111210212222111 its reverse (111222212012111), we get a palindrome (222432424234222).

The spelling of 111210212222111 in words is "one hundred eleven trillion, two hundred ten billion, two hundred twelve million, two hundred twenty-two thousand, one hundred eleven".