221606102 has 8 divisors (see below), whose sum is σ = 332717112. Its totient is φ = 110700400.

The previous prime is 221606093. The next prime is 221606149. The reversal of 221606102 is 201606122.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48599 + ... + 52962.

It is an arithmetic number, because the mean of its divisors is an integer number (41589639).

Almost surely, 2^221606102 is an apocalyptic number.

221606102 is a deficient number, since it is larger than the sum of its proper divisors (111111010).

221606102 is a wasteful number, since it uses less digits than its factorization.

221606102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102654.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 221606102 is about 14886.4402057712. The cubic root of 221606102 is about 605.1465637675.

Adding to 221606102 its sum of digits (20), we get a palindrome (221606122).

The spelling of 221606102 in words is "two hundred twenty-one million, six hundred six thousand, one hundred two".