221334125 has 16 divisors (see below), whose sum is σ = 278923008. Its totient is φ = 175338000.

The previous prime is 221334121. The next prime is 221334161. The reversal of 221334125 is 521433122.

221334125 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 221334125 - 2² = 221334121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221334125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221334121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4280 + ... + 21470.

It is an arithmetic number, because the mean of its divisors is an integer number (17432688).

Almost surely, 2^221334125 is an apocalyptic number.

221334125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

221334125 is a deficient number, since it is larger than the sum of its proper divisors (57588883).

221334125 is a wasteful number, since it uses less digits than its factorization.

221334125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17309 (or 17299 counting only the distinct ones).

The product of its digits is 1440, while the sum is 23.

The square root of 221334125 is about 14877.3023428308. The cubic root of 221334125 is about 604.8988971140.

Adding to 221334125 its reverse (521433122), we get a palindrome (742767247).

The spelling of 221334125 in words is "two hundred twenty-one million, three hundred thirty-four thousand, one hundred twenty-five".