221325670 has 8 divisors (see below), whose sum is σ = 398386224. Its totient is φ = 88530264.

The previous prime is 221325659. The next prime is 221325677. The reversal of 221325670 is 76523122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221325677) 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 3 ways as a sum of consecutive naturals, for example, 11066274 + ... + 11066293.

It is an arithmetic number, because the mean of its divisors is an integer number (49798278).

Almost surely, 2^221325670 is an apocalyptic number.

221325670 is a deficient number, since it is larger than the sum of its proper divisors (177060554).

221325670 is a wasteful number, since it uses less digits than its factorization.

221325670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22132574.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 221325670 is about 14877.0181824181. The cubic root of 221325670 is about 604.8911946035.

Adding to 221325670 its reverse (76523122), we get a palindrome (297848792).

The spelling of 221325670 in words is "two hundred twenty-one million, three hundred twenty-five thousand, six hundred seventy".