221443041342 has 8 divisors (see below), whose sum is σ = 442886082696. Its totient is φ = 73814347112.

The previous prime is 221443041311. The next prime is 221443041359. The reversal of 221443041342 is 243140344122.

It is a sphenic number, since it is the product of 3 distinct primes.

221443041342 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18453586773 + ... + 18453586784.

It is an arithmetic number, because the mean of its divisors is an integer number (55360760337).

Almost surely, 2^221443041342 is an apocalyptic number.

221443041342 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

221443041342 is a wasteful number, since it uses less digits than its factorization.

221443041342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36907173562.

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 221443041342 its reverse (243140344122), we get a palindrome (464583385464).

The spelling of 221443041342 in words is "two hundred twenty-one billion, four hundred forty-three million, forty-one thousand, three hundred forty-two".