221244120242 has 8 divisors (see below), whose sum is σ = 332218857132. Its totient is φ = 110504501200.

The previous prime is 221244120241. The next prime is 221244120281. The reversal of 221244120242 is 242021442122.

221244120242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 197392715521 + 23851404721 = 444289^2 + 154439^2 .

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 (221244120241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58777109 + ... + 58780872.

Almost surely, 2^221244120242 is an apocalyptic number.

221244120242 is a deficient number, since it is larger than the sum of its proper divisors (110974736890).

221244120242 is a wasteful number, since it uses less digits than its factorization.

221244120242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117558924.

The product of its (nonzero) digits is 4096, while the sum is 26.

Adding to 221244120242 its reverse (242021442122), we get a palindrome (463265562364).

The spelling of 221244120242 in words is "two hundred twenty-one billion, two hundred forty-four million, one hundred twenty thousand, two hundred forty-two".