221203342042 has 16 divisors (see below), whose sum is σ = 339009783552. Its totient is φ = 108202096080.

The previous prime is 221203342037. The next prime is 221203342057. The reversal of 221203342042 is 240243302122.

221203342042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 221203341998 and 221203342016.

It is an unprimeable number.

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, 282558 + ... + 722665.

It is an arithmetic number, because the mean of its divisors is an integer number (21188111472).

Almost surely, 2^221203342042 is an apocalyptic number.

221203342042 is a deficient number, since it is larger than the sum of its proper divisors (117806441510).

221203342042 is a wasteful number, since it uses less digits than its factorization.

221203342042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007613.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 221203342042 its reverse (240243302122), we get a palindrome (461446644164).

The spelling of 221203342042 in words is "two hundred twenty-one billion, two hundred three million, three hundred forty-two thousand, forty-two".