221464323 has 12 divisors (see below), whose sum is σ = 336729640. Its totient is φ = 139872096.

The previous prime is 221464291. The next prime is 221464333. The reversal of 221464323 is 323464122.

221464323 is a `hidden beast` number, since 2 + 2 + 14 + 643 + 2 + 3 = 666.

It is not a de Polignac number, because 221464323 - 2⁵ = 221464291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221464333) 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 11 ways as a sum of consecutive naturals, for example, 647386 + ... + 647727.

Almost surely, 2^221464323 is an apocalyptic number.

221464323 is a deficient number, since it is larger than the sum of its proper divisors (115265317).

221464323 is a wasteful number, since it uses less digits than its factorization.

221464323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295138 (or 1295135 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

The square root of 221464323 is about 14881.6774256130. The cubic root of 221464323 is about 605.0174828179.

The spelling of 221464323 in words is "two hundred twenty-one million, four hundred sixty-four thousand, three hundred twenty-three".