221319334 has 32 divisors (see below), whose sum is σ = 361428480. Its totient is φ = 101300832.

The previous prime is 221319257. The next prime is 221319337. The reversal of 221319334 is 433913122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221319337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147492 + ... + 148984.

It is an arithmetic number, because the mean of its divisors is an integer number (11294640).

Almost surely, 2^221319334 is an apocalyptic number.

221319334 is a deficient number, since it is larger than the sum of its proper divisors (140109146).

221319334 is a wasteful number, since it uses less digits than its factorization.

221319334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1644.

The product of its digits is 3888, while the sum is 28.

The square root of 221319334 is about 14876.8052349959. The cubic root of 221319334 is about 604.8854223747.

The spelling of 221319334 in words is "two hundred twenty-one million, three hundred nineteen thousand, three hundred thirty-four".