3443121021 has 8 divisors (see below), whose sum is σ = 4638156544. Its totient is φ = 2271749760.

The previous prime is 3443120987. The next prime is 3443121041. The reversal of 3443121021 is 1201213443.

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

It is not a de Polignac number, because 3443121021 - 2⁶ = 3443120957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3443121041) 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, 5915725 + ... + 5916306.

It is an arithmetic number, because the mean of its divisors is an integer number (579769568).

Almost surely, 2^3443121021 is an apocalyptic number.

It is an amenable number.

3443121021 is a deficient number, since it is larger than the sum of its proper divisors (1195035523).

3443121021 is a wasteful number, since it uses less digits than its factorization.

3443121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11832131.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 3443121021 is about 58678.1136455493. The cubic root of 3443121021 is about 1510.0248553720.

Adding to 3443121021 its reverse (1201213443), we get a palindrome (4644334464).

The spelling of 3443121021 in words is "three billion, four hundred forty-three million, one hundred twenty-one thousand, twenty-one".