221324334 has 64 divisors (see below), whose sum is σ = 555448320. Its totient is φ = 57114720.

The previous prime is 221324329. The next prime is 221324339. The reversal of 221324334 is 433423122.

221324334 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (221324329) and next prime (221324339).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221324339) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73837 + ... + 76775.

It is an arithmetic number, because the mean of its divisors is an integer number (8678880).

Almost surely, 2^221324334 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221324334, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (277724160).

221324334 is an abundant number, since it is smaller than the sum of its proper divisors (334123986).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221324334 is a wasteful number, since it uses less digits than its factorization.

221324334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3125.

The product of its digits is 3456, while the sum is 24.

The square root of 221324334 is about 14876.9732808794. The cubic root of 221324334 is about 604.8899774886.

Adding to 221324334 its reverse (433423122), we get a palindrome (654747456).

The spelling of 221324334 in words is "two hundred twenty-one million, three hundred twenty-four thousand, three hundred thirty-four".