221230311222 has 8 divisors (see below), whose sum is σ = 442460622456. Its totient is φ = 73743437072.

The previous prime is 221230311173. The next prime is 221230311233. The reversal of 221230311222 is 222113032122.

221230311222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

221230311222 is an admirable number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 18435859263 + ... + 18435859274.

It is an arithmetic number, because the mean of its divisors is an integer number (55307577807).

Almost surely, 2^221230311222 is an apocalyptic number.

221230311222 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.

221230311222 is a wasteful number, since it uses less digits than its factorization.

221230311222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36871718542.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 221230311222 its reverse (222113032122), we get a palindrome (443343343344).

The spelling of 221230311222 in words is "two hundred twenty-one billion, two hundred thirty million, three hundred eleven thousand, two hundred twenty-two".