221474 has 8 divisors (see below), whose sum is σ = 362448. Its totient is φ = 100660.

The previous prime is 221471. The next prime is 221477. The reversal of 221474 is 474122.

It is an interprime number because it is at equal distance from previous prime (221471) and next prime (221477).

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 (221471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5012 + ... + 5055.

It is an arithmetic number, because the mean of its divisors is an integer number (45306).

2²²¹⁴⁷⁴ is an apocalyptic number.

221474 is a deficient number, since it is larger than the sum of its proper divisors (140974).

221474 is a wasteful number, since it uses less digits than its factorization.

221474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10080.

The product of its digits is 448, while the sum is 20.

The square root of 221474 is about 470.6102421325. The cubic root of 221474 is about 60.5026294875.

Adding to 221474 its reverse (474122), we get a palindrome (695596).

It can be divided in two parts, 22147 and 4, that multiplied together give a palindrome (88588).

The spelling of 221474 in words is "two hundred twenty-one thousand, four hundred seventy-four", and thus it is an iban number.