3051221 has 4 divisors (see below), whose sum is σ = 3061344. Its totient is φ = 3041100.

The previous prime is 3051173. The next prime is 3051227. The reversal of 3051221 is 1221503.

It is a happy number.

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 3051221 - 2¹⁰ = 3050197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3051196 and 3051205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3051227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4595 + ... + 5216.

It is an arithmetic number, because the mean of its divisors is an integer number (765336).

Almost surely, 2^3051221 is an apocalyptic number.

It is an amenable number.

3051221 is a deficient number, since it is larger than the sum of its proper divisors (10123).

3051221 is an equidigital number, since it uses as much as digits as its factorization.

3051221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10122.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 3051221 is about 1746.7744559616. The cubic root of 3051221 is about 145.0411456756.

Adding to 3051221 its reverse (1221503), we get a palindrome (4272724).

The spelling of 3051221 in words is "three million, fifty-one thousand, two hundred twenty-one".