221606116502 has 8 divisors (see below), whose sum is σ = 332424723816. Its totient is φ = 110797875232.

The previous prime is 221606116451. The next prime is 221606116517. The reversal of 221606116502 is 205611606122.

221606116502 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2537843 + ... + 2623710.

It is an arithmetic number, because the mean of its divisors is an integer number (41553090477).

Almost surely, 2^221606116502 is an apocalyptic number.

221606116502 is a deficient number, since it is larger than the sum of its proper divisors (110818607314).

221606116502 is a wasteful number, since it uses less digits than its factorization.

221606116502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5183022.

The product of its (nonzero) digits is 8640, while the sum is 32.

The spelling of 221606116502 in words is "two hundred twenty-one billion, six hundred six million, one hundred sixteen thousand, five hundred two".