221314475 has 12 divisors (see below), whose sum is σ = 275316456. Its totient is φ = 176479680.

The previous prime is 221314459. The next prime is 221314477. The reversal of 221314475 is 574413122.

It is not a de Polignac number, because 221314475 - 2⁴ = 221314459 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221314477) 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 11 ways as a sum of consecutive naturals, for example, 6317 + ... + 21966.

It is an arithmetic number, because the mean of its divisors is an integer number (22943038).

Almost surely, 2^221314475 is an apocalyptic number.

221314475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

221314475 is a deficient number, since it is larger than the sum of its proper divisors (54001981).

221314475 is a wasteful number, since it uses less digits than its factorization.

221314475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28606 (or 28601 counting only the distinct ones).

The product of its digits is 6720, while the sum is 29.

The square root of 221314475 is about 14876.6419261875. The cubic root of 221314475 is about 604.8809956493.

Adding to 221314475 its reverse (574413122), we get a palindrome (795727597).

The spelling of 221314475 in words is "two hundred twenty-one million, three hundred fourteen thousand, four hundred seventy-five".