221302006 has 16 divisors (see below), whose sum is σ = 349830000. Its totient is φ = 104705568.

The previous prime is 221301967. The next prime is 221302007. The reversal of 221302006 is 600203122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221302007) 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, 35620 + ... + 41368.

It is an arithmetic number, because the mean of its divisors is an integer number (21864375).

Almost surely, 2^221302006 is an apocalyptic number.

221302006 is a deficient number, since it is larger than the sum of its proper divisors (128527994).

221302006 is a wasteful number, since it uses less digits than its factorization.

221302006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6783.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 221302006 is about 14876.2228404928. Note that the first 3 decimals coincide. The cubic root of 221302006 is about 604.8696356410.

Adding to 221302006 its reverse (600203122), we get a palindrome (821505128).

The spelling of 221302006 in words is "two hundred twenty-one million, three hundred two thousand, six".