221244312234 has 32 divisors (see below), whose sum is σ = 508120911360. Its totient is φ = 63515113200.

The previous prime is 221244312227. The next prime is 221244312239. The reversal of 221244312234 is 432213442122.

It is not an unprimeable number, because it can be changed into a prime (221244312239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88214182 + ... + 88216689.

It is an arithmetic number, because the mean of its divisors is an integer number (15878778480).

Almost surely, 2^221244312234 is an apocalyptic number.

221244312234 is an abundant number, since it is smaller than the sum of its proper divisors (286876599126).

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

221244312234 is a wasteful number, since it uses less digits than its factorization.

221244312234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176430906.

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

Adding to 221244312234 its reverse (432213442122), we get a palindrome (653457754356).

The spelling of 221244312234 in words is "two hundred twenty-one billion, two hundred forty-four million, three hundred twelve thousand, two hundred thirty-four".