3213021 has 8 divisors (see below), whose sum is σ = 4896064. Its totient is φ = 1836000.

The previous prime is 3213011. The next prime is 3213029. The reversal of 3213021 is 1203123.

It is a happy number.

3213021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 3213021 - 2⁹ = 3212509 is a prime.

It is an Ulam number.

It is a Duffinian number.

3213021 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3212988 and 3213006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3213029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76480 + ... + 76521.

It is an arithmetic number, because the mean of its divisors is an integer number (612008).

Almost surely, 2^3213021 is an apocalyptic number.

It is an amenable number.

3213021 is a deficient number, since it is larger than the sum of its proper divisors (1683043).

3213021 is a wasteful number, since it uses less digits than its factorization.

3213021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153011.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 3213021 is about 1792.4901673370. The cubic root of 3213021 is about 147.5608635157.

Adding to 3213021 its reverse (1203123), we get a palindrome (4416144).

The spelling of 3213021 in words is "three million, two hundred thirteen thousand, twenty-one".