221334142 has 16 divisors (see below), whose sum is σ = 337075200. Its totient is φ = 108983160.

The previous prime is 221334121. The next prime is 221334161. The reversal of 221334142 is 241433122.

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, 67767 + ... + 70957.

It is an arithmetic number, because the mean of its divisors is an integer number (21067200).

Almost surely, 2^221334142 is an apocalyptic number.

221334142 is a deficient number, since it is larger than the sum of its proper divisors (115741058).

221334142 is a wasteful number, since it uses less digits than its factorization.

221334142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3711.

The product of its digits is 1152, while the sum is 22.

The square root of 221334142 is about 14877.3029141710. The cubic root of 221334142 is about 604.8989126008.

Adding to 221334142 its reverse (241433122), we get a palindrome (462767264).

The spelling of 221334142 in words is "two hundred twenty-one million, three hundred thirty-four thousand, one hundred forty-two".