221443121044242 has 48 divisors (see below), whose sum is σ = 488385396682560. Its totient is φ = 72494890826400.

The previous prime is 221443121044199. The next prime is 221443121044247. The reversal of 221443121044242 is 242440121344122.

221443121044242 is a `hidden beast` number, since 2 + 2 + 1 + 4 + 431 + 210 + 4 + 4 + 2 + 4 + 2 = 666.

221443121044242 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 = 221443121044197 and 221443121044206.

It is not an unprimeable number, because it can be changed into a prime (221443121044247) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 97136734 + ... + 99390297.

It is an arithmetic number, because the mean of its divisors is an integer number (10174695764220).

Almost surely, 2^{221443121044242} is an apocalyptic number.

221443121044242 is an abundant number, since it is smaller than the sum of its proper divisors (266942275638318).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221443121044242 is a wasteful number, since it uses less digits than its factorization.

221443121044242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196528159 (or 196528156 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 36.

Adding to 221443121044242 its reverse (242440121344122), we get a palindrome (463883242388364).

The spelling of 221443121044242 in words is "two hundred twenty-one trillion, four hundred forty-three billion, one hundred twenty-one million, forty-four thousand, two hundred forty-two".