221074 has 8 divisors (see below), whose sum is σ = 379008. Its totient is φ = 94740.

The previous prime is 221071. The next prime is 221077. The reversal of 221074 is 470122.

It is an interprime number because it is at equal distance from previous prime (221071) and next prime (221077).

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 (221071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7882 + ... + 7909.

It is an arithmetic number, because the mean of its divisors is an integer number (47376).

2²²¹⁰⁷⁴ is an apocalyptic number.

221074 is a deficient number, since it is larger than the sum of its proper divisors (157934).

221074 is a wasteful number, since it uses less digits than its factorization.

221074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15800.

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 221074 is about 470.1850699459. The cubic root of 221074 is about 60.4661833191.

Adding to 221074 its reverse (470122), we get a palindrome (691196).

The spelling of 221074 in words is "two hundred twenty-one thousand, seventy-four", and thus it is an iban number.