3111224221 has 4 divisors (see below), whose sum is σ = 3555684832. Its totient is φ = 2666763612.

The previous prime is 3111224183. The next prime is 3111224231. The reversal of 3111224221 is 1224221113.

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 not a de Polignac number, because 3111224221 - 2⁷ = 3111224093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3111224231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222230295 + ... + 222230308.

It is an arithmetic number, because the mean of its divisors is an integer number (888921208).

Almost surely, 2^3111224221 is an apocalyptic number.

It is an amenable number.

3111224221 is a deficient number, since it is larger than the sum of its proper divisors (444460611).

3111224221 is an equidigital number, since it uses as much as digits as its factorization.

3111224221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444460610.

The product of its digits is 192, while the sum is 19.

The square root of 3111224221 is about 55778.3490343700. The cubic root of 3111224221 is about 1459.8574047574.

Adding to 3111224221 its reverse (1224221113), we get a palindrome (4335445334).

The spelling of 3111224221 in words is "three billion, one hundred eleven million, two hundred twenty-four thousand, two hundred twenty-one".