3443221381 has 2 divisors, whose sum is σ = 3443221382. Its totient is φ = 3443221380.

The previous prime is 3443221337. The next prime is 3443221391. The reversal of 3443221381 is 1831223443.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2397669156 + 1045552225 = 48966^2 + 32335^2 .

It is a cyclic number.

It is not a de Polignac number, because 3443221381 - 2¹¹ = 3443219333 is a prime.

It is a super-2 number, since 2×3443221381² = 23711546957151094322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3443221391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1721610690 + 1721610691.

It is an arithmetic number, because the mean of its divisors is an integer number (1721610691).

Almost surely, 2^3443221381 is an apocalyptic number.

It is an amenable number.

3443221381 is a deficient number, since it is larger than the sum of its proper divisors (1).

3443221381 is an equidigital number, since it uses as much as digits as its factorization.

3443221381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 31.

The square root of 3443221381 is about 58678.9688133662. The cubic root of 3443221381 is about 1510.0395266176.

The spelling of 3443221381 in words is "three billion, four hundred forty-three million, two hundred twenty-one thousand, three hundred eighty-one".