221233210442 has 8 divisors (see below), whose sum is σ = 339943713732. Its totient is φ = 107918639200.

The previous prime is 221233210427. The next prime is 221233210489. The reversal of 221233210442 is 244012332122.

221233210442 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 190496458681 + 30736751761 = 436459^2 + 175319^2 .

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

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, 1348982909 + ... + 1348983072.

Almost surely, 2^221233210442 is an apocalyptic number.

221233210442 is a deficient number, since it is larger than the sum of its proper divisors (118710503290).

221233210442 is a wasteful number, since it uses less digits than its factorization.

221233210442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2697966024.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 221233210442 its reverse (244012332122), we get a palindrome (465245542564).

The spelling of 221233210442 in words is "two hundred twenty-one billion, two hundred thirty-three million, two hundred ten thousand, four hundred forty-two".