3220420243 has 2 divisors, whose sum is σ = 3220420244. Its totient is φ = 3220420242.

The previous prime is 3220420223. The next prime is 3220420261. The reversal of 3220420243 is 3420240223.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3220420243 - 2⁹ = 3220419731 is a prime.

It is a super-2 number, since 2×3220420243² = 20742213083048358098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3220420223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1610210121 + 1610210122.

It is an arithmetic number, because the mean of its divisors is an integer number (1610210122).

Almost surely, 2^3220420243 is an apocalyptic number.

3220420243 is a deficient number, since it is larger than the sum of its proper divisors (1).

3220420243 is an equidigital number, since it uses as much as digits as its factorization.

3220420243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 3220420243 is about 56748.7466205202. The cubic root of 3220420243 is about 1476.7404895999.

Adding to 3220420243 its reverse (3420240223), we get a palindrome (6640660466).

The spelling of 3220420243 in words is "three billion, two hundred twenty million, four hundred twenty thousand, two hundred forty-three".