221214243442 has 16 divisors (see below), whose sum is σ = 354498870240. Its totient is φ = 103221727488.

The previous prime is 221214243389. The next prime is 221214243449. The reversal of 221214243442 is 244342412122.

221214243442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (221214243449) 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 7 ways as a sum of consecutive naturals, for example, 43440943 + ... + 43446034.

It is an arithmetic number, because the mean of its divisors is an integer number (22156179390).

Almost surely, 2^221214243442 is an apocalyptic number.

221214243442 is a deficient number, since it is larger than the sum of its proper divisors (133284626798).

221214243442 is a wasteful number, since it uses less digits than its factorization.

221214243442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86887065.

The product of its digits is 24576, while the sum is 31.

Adding to 221214243442 its reverse (244342412122), we get a palindrome (465556655564).

The spelling of 221214243442 in words is "two hundred twenty-one billion, two hundred fourteen million, two hundred forty-three thousand, four hundred forty-two".