3321321 has 4 divisors (see below), whose sum is σ = 4428432. Its totient is φ = 2214212.

The previous prime is 3321319. The next prime is 3321323. The reversal of 3321321 is 1231233.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1231233 = 3 ⋅410411.

It is an interprime number because it is at equal distance from previous prime (3321319) and next prime (3321323).

It is a cyclic number.

It is not a de Polignac number, because 3321321 - 2¹ = 3321319 is a prime.

It is a super-2 number, since 2×3321321² = 22062346370082, which contains 22 as substring.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 3321321.

It is not an unprimeable number, because it can be changed into a prime (3321323) 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, 553551 + ... + 553556.

It is an arithmetic number, because the mean of its divisors is an integer number (1107108).

Almost surely, 2^3321321 is an apocalyptic number.

It is an amenable number.

3321321 is a deficient number, since it is larger than the sum of its proper divisors (1107111).

3321321 is a wasteful number, since it uses less digits than its factorization.

3321321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1107110.

The product of its digits is 108, while the sum is 15.

The square root of 3321321 is about 1822.4491762461. The cubic root of 3321321 is about 149.2005018108.

Adding to 3321321 its reverse (1231233), we get a palindrome (4552554).

It can be divided in two parts, 332 and 1321, that added together give a triangular number (1653 = T₅₇).

The spelling of 3321321 in words is "three million, three hundred twenty-one thousand, three hundred twenty-one".