221222334312 has 48 divisors (see below), whose sum is σ = 684735798240. Its totient is φ = 63206381088.

The previous prime is 221222334283. The next prime is 221222334343. The reversal of 221222334312 is 213433222122.

221222334312 is a `hidden beast` number, since 2 + 2 + 1 + 2 + 223 + 3 + 431 + 2 = 666.

221222334312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

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 11 ways as a sum of consecutive naturals, for example, 219466098 + ... + 219467105.

It is an arithmetic number, because the mean of its divisors is an integer number (14265329130).

Almost surely, 2^221222334312 is an apocalyptic number.

It is an amenable number.

221222334312 is an abundant number, since it is smaller than the sum of its proper divisors (463513463928).

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

221222334312 is a wasteful number, since it uses less digits than its factorization.

221222334312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438933222 (or 438933215 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

Adding to 221222334312 its reverse (213433222122), we get a palindrome (434655556434).

The spelling of 221222334312 in words is "two hundred twenty-one billion, two hundred twenty-two million, three hundred thirty-four thousand, three hundred twelve".