221369338 has 8 divisors (see below), whose sum is σ = 336731040. Its totient is φ = 109125660.

The previous prime is 221369333. The next prime is 221369341. The reversal of 221369338 is 833963122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 221369297 and 221369306.

It is not an unprimeable number, because it can be changed into a prime (221369333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 779328 + ... + 779611.

It is an arithmetic number, because the mean of its divisors is an integer number (42091380).

Almost surely, 2^221369338 is an apocalyptic number.

221369338 is a deficient number, since it is larger than the sum of its proper divisors (115361702).

221369338 is a wasteful number, since it uses less digits than its factorization.

221369338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1559012.

The product of its digits is 46656, while the sum is 37.

The square root of 221369338 is about 14878.4857428436. The cubic root of 221369338 is about 604.9309740706.

The spelling of 221369338 in words is "two hundred twenty-one million, three hundred sixty-nine thousand, three hundred thirty-eight".