221342 has 8 divisors (see below), whose sum is σ = 362232. Its totient is φ = 100600.

The previous prime is 221327. The next prime is 221393. The reversal of 221342 is 243122.

221342 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

221342 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5009 + ... + 5052.

It is an arithmetic number, because the mean of its divisors is an integer number (45279).

2²²¹³⁴² is an apocalyptic number.

221342 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221342 is a deficient number, since it is larger than the sum of its proper divisors (140890).

221342 is a wasteful number, since it uses less digits than its factorization.

221342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10074.

The product of its digits is 96, while the sum is 14.

The square root of 221342 is about 470.4699777882. The cubic root of 221342 is about 60.4906071068.

Adding to 221342 its reverse (243122), we get a palindrome (464464).

The spelling of 221342 in words is "two hundred twenty-one thousand, three hundred forty-two", and thus it is an iban number.