221330424449 has 16 divisors (see below), whose sum is σ = 226457856000. Its totient is φ = 216220900560.

The previous prime is 221330424443. The next prime is 221330424451. The reversal of 221330424449 is 944424033122.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 221330424449 - 2³² = 217035457153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221330424443) 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 in 15 ways as a sum of consecutive naturals, for example, 91799054 + ... + 91801464.

It is an arithmetic number, because the mean of its divisors is an integer number (14153616000).

Almost surely, 2^221330424449 is an apocalyptic number.

It is an amenable number.

221330424449 is a deficient number, since it is larger than the sum of its proper divisors (5127431551).

221330424449 is a wasteful number, since it uses less digits than its factorization.

221330424449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5260.

The product of its (nonzero) digits is 165888, while the sum is 38.

The spelling of 221330424449 in words is "two hundred twenty-one billion, three hundred thirty million, four hundred twenty-four thousand, four hundred forty-nine".