221234324 has 12 divisors (see below), whose sum is σ = 387510900. Its totient is φ = 110516928.

The previous prime is 221234317. The next prime is 221234327. The reversal of 221234324 is 423432122.

221234324 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 5438224 + 215796100 = 2332^2 + 14690^2 .

It is a super-2 number, since 2×221234324² = 97889252231473952, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 221234324.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221234327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19979 + ... + 29010.

It is an arithmetic number, because the mean of its divisors is an integer number (32292575).

Almost surely, 2^221234324 is an apocalyptic number.

It is an amenable number.

221234324 is a deficient number, since it is larger than the sum of its proper divisors (166276576).

221234324 is a wasteful number, since it uses less digits than its factorization.

221234324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50122 (or 50120 counting only the distinct ones).

The product of its digits is 2304, while the sum is 23.

The square root of 221234324 is about 14873.9478283339. The cubic root of 221234324 is about 604.8079658267.

Adding to 221234324 its reverse (423432122), we get a palindrome (644666446).

The spelling of 221234324 in words is "two hundred twenty-one million, two hundred thirty-four thousand, three hundred twenty-four".