221701106 has 16 divisors (see below), whose sum is σ = 365644800. Its totient is φ = 99978480.

The previous prime is 221701099. The next prime is 221701127. The reversal of 221701106 is 601107122.

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 36881 + ... + 42468.

It is an arithmetic number, because the mean of its divisors is an integer number (22852800).

Almost surely, 2^221701106 is an apocalyptic number.

221701106 is a deficient number, since it is larger than the sum of its proper divisors (143943694).

221701106 is a wasteful number, since it uses less digits than its factorization.

221701106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79489.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 221701106 is about 14889.6308214811. The cubic root of 221701106 is about 605.2330281893.

Adding to 221701106 its reverse (601107122), we get a palindrome (822808228).

The spelling of 221701106 in words is "two hundred twenty-one million, seven hundred one thousand, one hundred six".