221324135 has 8 divisors (see below), whose sum is σ = 265791456. Its totient is φ = 176924320.

The previous prime is 221324119. The next prime is 221324161. The reversal of 221324135 is 531423122.

221324135 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 221324135 - 2⁴ = 221324119 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 221324135.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9356 + ... + 23025.

It is an arithmetic number, because the mean of its divisors is an integer number (33223932).

Almost surely, 2^221324135 is an apocalyptic number.

221324135 is a deficient number, since it is larger than the sum of its proper divisors (44467321).

221324135 is a wasteful number, since it uses less digits than its factorization.

221324135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33753.

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

The square root of 221324135 is about 14876.9665926895. The cubic root of 221324135 is about 604.8897961964.

Adding to 221324135 its reverse (531423122), we get a palindrome (752747257).

The spelling of 221324135 in words is "two hundred twenty-one million, three hundred twenty-four thousand, one hundred thirty-five".