221404314 has 16 divisors (see below), whose sum is σ = 449418528. Its totient is φ = 72699792.

The previous prime is 221404301. The next prime is 221404327. The reversal of 221404314 is 413404122.

221404314 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (221404301) and next prime (221404327).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 274977 + ... + 275780.

It is an arithmetic number, because the mean of its divisors is an integer number (28088658).

Almost surely, 2^221404314 is an apocalyptic number.

221404314 is an abundant number, since it is smaller than the sum of its proper divisors (228014214).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221404314 is a wasteful number, since it uses less digits than its factorization.

221404314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550829.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 221404314 is about 14879.6610848500. The cubic root of 221404314 is about 604.9628317671.

Adding to 221404314 its reverse (413404122), we get a palindrome (634808436).

The spelling of 221404314 in words is "two hundred twenty-one million, four hundred four thousand, three hundred fourteen".