2443221019 has 2 divisors, whose sum is σ = 2443221020. Its totient is φ = 2443221018.

The previous prime is 2443220993. The next prime is 2443221041. The reversal of 2443221019 is 9101223442.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2443221019 - 2⁷ = 2443220891 is a prime.

It is a super-2 number, since 2×2443221019² = 11938657895366796722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2443221059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1221610509 + 1221610510.

It is an arithmetic number, because the mean of its divisors is an integer number (1221610510).

Almost surely, 2^2443221019 is an apocalyptic number.

2443221019 is a deficient number, since it is larger than the sum of its proper divisors (1).

2443221019 is an equidigital number, since it uses as much as digits as its factorization.

2443221019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 2443221019 is about 49428.9491998363. The cubic root of 2443221019 is about 1346.8552350134.

It can be divided in two parts, 24432 and 21019, that added together give a triangular number (45451 = T₃₀₁).

The spelling of 2443221019 in words is "two billion, four hundred forty-three million, two hundred twenty-one thousand, nineteen".