221243314 has 8 divisors (see below), whose sum is σ = 332017308. Its totient is φ = 110570880.

The previous prime is 221243293. The next prime is 221243317. The reversal of 221243314 is 413342122.

It can be written as a sum of positive squares in 2 ways, for example, as 217061289 + 4182025 = 14733^2 + 2045^2 .

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

It is not an unprimeable number, because it can be changed into a prime (221243317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19687 + ... + 28810.

Almost surely, 2^221243314 is an apocalyptic number.

221243314 is a deficient number, since it is larger than the sum of its proper divisors (110773994).

221243314 is a wasteful number, since it uses less digits than its factorization.

221243314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50780.

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

The square root of 221243314 is about 14874.2500315142. The cubic root of 221243314 is about 604.8161579701.

Adding to 221243314 its reverse (413342122), we get a palindrome (634585436).

The spelling of 221243314 in words is "two hundred twenty-one million, two hundred forty-three thousand, three hundred fourteen".