221334442 has 16 divisors (see below), whose sum is σ = 380117952. Its totient is φ = 94685760.

The previous prime is 221334437. The next prime is 221334469. The reversal of 221334442 is 244433122.

It is a happy number.

221334442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 6159 + ... + 21922.

It is an arithmetic number, because the mean of its divisors is an integer number (23757372).

Almost surely, 2^221334442 is an apocalyptic number.

221334442 is a deficient number, since it is larger than the sum of its proper divisors (158783510).

221334442 is a wasteful number, since it uses less digits than its factorization.

221334442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28653.

The product of its digits is 4608, while the sum is 25.

The square root of 221334442 is about 14877.3129966402. The cubic root of 221334442 is about 604.8991858974.

Adding to 221334442 its reverse (244433122), we get a palindrome (465767564).

The spelling of 221334442 in words is "two hundred twenty-one million, three hundred thirty-four thousand, four hundred forty-two".