3243213021 has 8 divisors (see below), whose sum is σ = 4331505600. Its totient is φ = 2158531232.

The previous prime is 3243213019. The next prime is 3243213023. The reversal of 3243213021 is 1203123423.

It is an interprime number because it is at equal distance from previous prime (3243213019) and next prime (3243213023).

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

It is a cyclic number.

It is not a de Polignac number, because 3243213021 - 2¹ = 3243213019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3243213023) 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, 900600 + ... + 904193.

It is an arithmetic number, because the mean of its divisors is an integer number (541438200).

Almost surely, 2^3243213021 is an apocalyptic number.

It is an amenable number.

3243213021 is a deficient number, since it is larger than the sum of its proper divisors (1088292579).

3243213021 is a wasteful number, since it uses less digits than its factorization.

3243213021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1805395.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 3243213021 is about 56949.2144019564. The cubic root of 3243213021 is about 1480.2162182582.

Adding to 3243213021 its reverse (1203123423), we get a palindrome (4446336444).

The spelling of 3243213021 in words is "three billion, two hundred forty-three million, two hundred thirteen thousand, twenty-one".