221246 has 4 divisors (see below), whose sum is σ = 331872. Its totient is φ = 110622.

The previous prime is 221239. The next prime is 221251. The reversal of 221246 is 642122.

221246 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 221246.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55310 + ... + 55313.

It is an arithmetic number, because the mean of its divisors is an integer number (82968).

2²²¹²⁴⁶ is an apocalyptic number.

221246 is a deficient number, since it is larger than the sum of its proper divisors (110626).

221246 is a wasteful number, since it uses less digits than its factorization.

221246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110625.

The product of its digits is 192, while the sum is 17.

The square root of 221246 is about 470.3679410844. The cubic root of 221246 is about 60.4818605546.

Adding to 221246 its reverse (642122), we get a palindrome (863368).

The spelling of 221246 in words is "two hundred twenty-one thousand, two hundred forty-six".