221344421384 has 32 divisors (see below), whose sum is σ = 426427878240. Its totient is φ = 107646633600.

The previous prime is 221344421317. The next prime is 221344421387. The reversal of 221344421384 is 483124443122.

It is not an unprimeable number, because it can be changed into a prime (221344421387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 910814 + ... + 1127949.

It is an arithmetic number, because the mean of its divisors is an integer number (13325871195).

Almost surely, 2^221344421384 is an apocalyptic number.

It is an amenable number.

221344421384 is a deficient number, since it is larger than the sum of its proper divisors (205083456856).

221344421384 is a wasteful number, since it uses less digits than its factorization.

221344421384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2039141 (or 2039137 counting only the distinct ones).

The product of its digits is 147456, while the sum is 38.

The spelling of 221344421384 in words is "two hundred twenty-one billion, three hundred forty-four million, four hundred twenty-one thousand, three hundred eighty-four".