221444099 has 2 divisors, whose sum is σ = 221444100. Its totient is φ = 221444098.

The previous prime is 221444077. The next prime is 221444131. The reversal of 221444099 is 990444122.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221444099 - 2⁸ = 221443843 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (221444009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110722049 + 110722050.

It is an arithmetic number, because the mean of its divisors is an integer number (110722050).

Almost surely, 2^221444099 is an apocalyptic number.

221444099 is a deficient number, since it is larger than the sum of its proper divisors (1).

221444099 is an equidigital number, since it uses as much as digits as its factorization.

221444099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 221444099 is about 14880.9979168065. The cubic root of 221444099 is about 604.9990656362. Note that the first 3 decimals are identical.

The spelling of 221444099 in words is "two hundred twenty-one million, four hundred forty-four thousand, ninety-nine".