3443212121 has 2 divisors, whose sum is σ = 3443212122. Its totient is φ = 3443212120.

The previous prime is 3443212063. The next prime is 3443212127. The reversal of 3443212121 is 1212123443.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2399922121 + 1043290000 = 48989^2 + 32300^2 .

It is a cyclic number.

It is not a de Polignac number, because 3443212121 - 2²² = 3439017817 is a prime.

It is not a weakly prime, because it can be changed into another prime (3443212127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1721606060 + 1721606061.

It is an arithmetic number, because the mean of its divisors is an integer number (1721606061).

Almost surely, 2^3443212121 is an apocalyptic number.

It is an amenable number.

3443212121 is a deficient number, since it is larger than the sum of its proper divisors (1).

3443212121 is an equidigital number, since it uses as much as digits as its factorization.

3443212121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 23.

The square root of 3443212121 is about 58678.8899094044. The cubic root of 3443212121 is about 1510.0381729455.

Adding to 3443212121 its reverse (1212123443), we get a palindrome (4655335564).

The spelling of 3443212121 in words is "three billion, four hundred forty-three million, two hundred twelve thousand, one hundred twenty-one".