221324339 has 2 divisors, whose sum is σ = 221324340. Its totient is φ = 221324338.

The previous prime is 221324329. The next prime is 221324347. The reversal of 221324339 is 933423122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221324339 - 2¹² = 221320243 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (221324329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110662169 + 110662170.

It is an arithmetic number, because the mean of its divisors is an integer number (110662170).

Almost surely, 2^221324339 is an apocalyptic number.

221324339 is a deficient number, since it is larger than the sum of its proper divisors (1).

221324339 is an equidigital number, since it uses as much as digits as its factorization.

221324339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 29.

The square root of 221324339 is about 14876.9734489243. The cubic root of 221324339 is about 604.8899820437.

The spelling of 221324339 in words is "two hundred twenty-one million, three hundred twenty-four thousand, three hundred thirty-nine".