221005714 has 8 divisors (see below), whose sum is σ = 333704448. Its totient is φ = 109770900.

The previous prime is 221005667. The next prime is 221005753. The reversal of 221005714 is 417500122.

It is a happy number.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 365602 + ... + 366205.

It is an arithmetic number, because the mean of its divisors is an integer number (41713056).

Almost surely, 2^221005714 is an apocalyptic number.

221005714 is a deficient number, since it is larger than the sum of its proper divisors (112698734).

221005714 is a wasteful number, since it uses less digits than its factorization.

221005714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731960.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 221005714 is about 14866.2609286935. The cubic root of 221005714 is about 604.5995701931.

Adding to 221005714 its reverse (417500122), we get a palindrome (638505836).

The spelling of 221005714 in words is "two hundred twenty-one million, five thousand, seven hundred fourteen".