221325467 has 16 divisors (see below), whose sum is σ = 245255040. Its totient is φ = 198052800.

The previous prime is 221325463. The next prime is 221325469. The reversal of 221325467 is 764523122.

It is not a de Polignac number, because 221325467 - 2² = 221325463 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221325463) 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, 323708 + ... + 324390.

It is an arithmetic number, because the mean of its divisors is an integer number (15328440).

Almost surely, 2^221325467 is an apocalyptic number.

221325467 is a deficient number, since it is larger than the sum of its proper divisors (23929573).

221325467 is a wasteful number, since it uses less digits than its factorization.

221325467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1114.

The product of its digits is 20160, while the sum is 32.

The square root of 221325467 is about 14877.0113598128. The cubic root of 221325467 is about 604.8910096679.

Adding to 221325467 its reverse (764523122), we get a palindrome (985848589).

The spelling of 221325467 in words is "two hundred twenty-one million, three hundred twenty-five thousand, four hundred sixty-seven".