3443213021 has 2 divisors, whose sum is σ = 3443213022. Its totient is φ = 3443213020.

The previous prime is 3443213017. The next prime is 3443213057. The reversal of 3443213021 is 1203123443.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3032704900 + 410508121 = 55070^2 + 20261^2 .

It is a cyclic number.

It is not a de Polignac number, because 3443213021 - 2² = 3443213017 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3443203021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1721606510 + 1721606511.

It is an arithmetic number, because the mean of its divisors is an integer number (1721606511).

Almost surely, 2^3443213021 is an apocalyptic number.

It is an amenable number.

3443213021 is a deficient number, since it is larger than the sum of its proper divisors (1).

3443213021 is an equidigital number, since it uses as much as digits as its factorization.

3443213021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 3443213021 is about 58678.8975782606. The cubic root of 3443213021 is about 1510.0383045120.

Adding to 3443213021 its reverse (1203123443), we get a palindrome (4646336464).

The spelling of 3443213021 in words is "three billion, four hundred forty-three million, two hundred thirteen thousand, twenty-one".