221705096 has 32 divisors (see below), whose sum is σ = 437650560. Its totient is φ = 105084672.

The previous prime is 221705069. The next prime is 221705111. The reversal of 221705096 is 690507122.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

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, 15461 + ... + 26123.

It is an arithmetic number, because the mean of its divisors is an integer number (13676580).

Almost surely, 2^221705096 is an apocalyptic number.

It is an amenable number.

221705096 is a deficient number, since it is larger than the sum of its proper divisors (215945464).

221705096 is a wasteful number, since it uses less digits than its factorization.

221705096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10805 (or 10801 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 221705096 is about 14889.7648067389. The cubic root of 221705096 is about 605.2366590016.

The spelling of 221705096 in words is "two hundred twenty-one million, seven hundred five thousand, ninety-six".