221210312042 has 16 divisors (see below), whose sum is σ = 346274929152. Its totient is φ = 105786244080.

The previous prime is 221210312041. The next prime is 221210312093. The reversal of 221210312042 is 240213012122.

221210312042 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 (221210312041) 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, 277292 + ... + 720632.

It is an arithmetic number, because the mean of its divisors is an integer number (21642183072).

Almost surely, 2^221210312042 is an apocalyptic number.

221210312042 is a deficient number, since it is larger than the sum of its proper divisors (125064617110).

221210312042 is a wasteful number, since it uses less digits than its factorization.

221210312042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454213.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 221210312042 its reverse (240213012122), we get a palindrome (461423324164).

The spelling of 221210312042 in words is "two hundred twenty-one billion, two hundred ten million, three hundred twelve thousand, forty-two".