221423421340328 has 96 divisors (see below), whose sum is σ = 429584002780800. Its totient is φ = 106955669044224.

The previous prime is 221423421340217. The next prime is 221423421340369. The reversal of 221423421340328 is 823043124324122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 939961376 + ... + 940196912.

It is an arithmetic number, because the mean of its divisors is an integer number (4474833362300).

Almost surely, 2^{221423421340328} is an apocalyptic number.

It is an amenable number.

221423421340328 is a deficient number, since it is larger than the sum of its proper divisors (208160581440472).

221423421340328 is a wasteful number, since it uses less digits than its factorization.

221423421340328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235987 (or 235834 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 41.

The spelling of 221423421340328 in words is "two hundred twenty-one trillion, four hundred twenty-three billion, four hundred twenty-one million, three hundred forty thousand, three hundred twenty-eight".