3112221 has 8 divisors (see below), whose sum is σ = 4742464. Its totient is φ = 1778400.

The previous prime is 3112147. The next prime is 3112237. The reversal of 3112221 is 1222113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3112221 - 2⁷ = 3112093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3112197 and 3112206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3112271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74080 + ... + 74121.

It is an arithmetic number, because the mean of its divisors is an integer number (592808).

Almost surely, 2^3112221 is an apocalyptic number.

It is an amenable number.

3112221 is a deficient number, since it is larger than the sum of its proper divisors (1630243).

3112221 is a wasteful number, since it uses less digits than its factorization.

3112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148211.

The product of its digits is 24, while the sum is 12.

The square root of 3112221 is about 1764.1488032476. The cubic root of 3112221 is about 146.0013291929.

Adding to 3112221 its reverse (1222113), we get a palindrome (4334334).

It can be divided in two parts, 3112 and 221, that added together give a palindrome (3333).

The spelling of 3112221 in words is "three million, one hundred twelve thousand, two hundred twenty-one".