3223021 has 4 divisors (see below), whose sum is σ = 3252700. Its totient is φ = 3193344.

The previous prime is 3223009. The next prime is 3223043. The reversal of 3223021 is 1203223.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1203223 = 7 ⋅171889.

It can be written as a sum of positive squares in 2 ways, for example, as 1990921 + 1232100 = 1411^2 + 1110^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3223021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3222992 and 3223010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3223061) 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, 14676 + ... + 14893.

It is an arithmetic number, because the mean of its divisors is an integer number (813175).

Almost surely, 2^3223021 is an apocalyptic number.

It is an amenable number.

3223021 is a deficient number, since it is larger than the sum of its proper divisors (29679).

3223021 is a wasteful number, since it uses less digits than its factorization.

3223021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29678.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 3223021 is about 1795.2774158887. The cubic root of 3223021 is about 147.7137912861.

Adding to 3223021 its reverse (1203223), we get a palindrome (4426244).

The spelling of 3223021 in words is "three million, two hundred twenty-three thousand, twenty-one".