221600047 has 8 divisors (see below), whose sum is σ = 225636480. Its totient is φ = 217573080.

The previous prime is 221600023. The next prime is 221600051. The reversal of 221600047 is 740006122.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221600047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221600087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59008 + ... + 62650.

It is an arithmetic number, because the mean of its divisors is an integer number (28204560).

Almost surely, 2^221600047 is an apocalyptic number.

221600047 is a deficient number, since it is larger than the sum of its proper divisors (4036433).

221600047 is a wasteful number, since it uses less digits than its factorization.

221600047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4733.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 221600047 is about 14886.2368313822. The cubic root of 221600047 is about 605.1410521927.

Adding to 221600047 its reverse (740006122), we get a palindrome (961606169).

The spelling of 221600047 in words is "two hundred twenty-one million, six hundred thousand, forty-seven".