221344006 has 16 divisors (see below), whose sum is σ = 364304304. Its totient is φ = 100230624.

The previous prime is 221344001. The next prime is 221344007. The reversal of 221344006 is 600443122.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221344001) 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, 78936 + ... + 81691.

It is an arithmetic number, because the mean of its divisors is an integer number (22769019).

Almost surely, 2^221344006 is an apocalyptic number.

221344006 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

221344006 is a deficient number, since it is larger than the sum of its proper divisors (142960298).

221344006 is a wasteful number, since it uses less digits than its factorization.

221344006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160695.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 221344006 is about 14877.6344221788. The cubic root of 221344006 is about 604.9078984629.

Adding to 221344006 its reverse (600443122), we get a palindrome (821787128).

The spelling of 221344006 in words is "two hundred twenty-one million, three hundred forty-four thousand, six".