221314293 has 6 divisors (see below), whose sum is σ = 319676214. Its totient is φ = 147542856.

The previous prime is 221314277. The next prime is 221314307. The reversal of 221314293 is 392413122.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 185995044 + 35319249 = 13638^2 + 5943^2 .

It is not a de Polignac number, because 221314293 - 2⁴ = 221314277 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221314243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12295230 + ... + 12295247.

It is an arithmetic number, because the mean of its divisors is an integer number (53279369).

Almost surely, 2^221314293 is an apocalyptic number.

It is an amenable number.

221314293 is a deficient number, since it is larger than the sum of its proper divisors (98361921).

221314293 is a wasteful number, since it uses less digits than its factorization.

221314293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24590483 (or 24590480 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 221314293 is about 14876.6358092144. The cubic root of 221314293 is about 604.8808298394.

The spelling of 221314293 in words is "two hundred twenty-one million, three hundred fourteen thousand, two hundred ninety-three".