221300334 has 96 divisors (see below), whose sum is σ = 533239200. Its totient is φ = 66044160.

The previous prime is 221300323. The next prime is 221300357. The reversal of 221300334 is 433003122.

221300334 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 525444 + ... + 525864.

It is an arithmetic number, because the mean of its divisors is an integer number (5554575).

Almost surely, 2^221300334 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221300334, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266619600).

221300334 is an abundant number, since it is smaller than the sum of its proper divisors (311938866).

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

221300334 is a wasteful number, since it uses less digits than its factorization.

221300334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530 (or 527 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 221300334 is about 14876.1666433258. The cubic root of 221300334 is about 604.8681123161.

Adding to 221300334 its reverse (433003122), we get a palindrome (654303456).

The spelling of 221300334 in words is "two hundred twenty-one million, three hundred thousand, three hundred thirty-four".