221120344 has 32 divisors (see below), whose sum is σ = 433440000. Its totient is φ = 105554592.

The previous prime is 221120299. The next prime is 221120351. The reversal of 221120344 is 443021122.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157357 + ... + 158755.

It is an arithmetic number, because the mean of its divisors is an integer number (13545000).

Almost surely, 2^221120344 is an apocalyptic number.

It is an amenable number.

221120344 is a deficient number, since it is larger than the sum of its proper divisors (212319656).

221120344 is a wasteful number, since it uses less digits than its factorization.

221120344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2287 (or 2283 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 221120344 is about 14870.1158031806. The cubic root of 221120344 is about 604.7040822268.

Adding to 221120344 its reverse (443021122), we get a palindrome (664141466).

The spelling of 221120344 in words is "two hundred twenty-one million, one hundred twenty thousand, three hundred forty-four".