3112216111 has 4 divisors (see below), whose sum is σ = 3119148000. Its totient is φ = 3105284224.

The previous prime is 3112216109. The next prime is 3112216189. The reversal of 3112216111 is 1116122113.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3112216111 - 2¹ = 3112216109 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 (3112216711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3465271 + ... + 3466168.

It is an arithmetic number, because the mean of its divisors is an integer number (779787000).

Almost surely, 2^3112216111 is an apocalyptic number.

3112216111 is a deficient number, since it is larger than the sum of its proper divisors (6931889).

3112216111 is an equidigital number, since it uses as much as digits as its factorization.

3112216111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6931888.

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

The square root of 3112216111 is about 55787.2396789804. The cubic root of 3112216111 is about 1460.0125274149.

Adding to 3112216111 its reverse (1116122113), we get a palindrome (4228338224).

The spelling of 3112216111 in words is "three billion, one hundred twelve million, two hundred sixteen thousand, one hundred eleven".