222444421332 has 72 divisors (see below), whose sum is σ = 604403642304. Its totient is φ = 63489662208.

The previous prime is 222444421307. The next prime is 222444421343. The reversal of 222444421332 is 233124444222.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 222444421293 and 222444421302.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 372988 + ... + 764204.

It is an arithmetic number, because the mean of its divisors is an integer number (8394495032).

Almost surely, 2^222444421332 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222444421332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (302201821152).

222444421332 is an abundant number, since it is smaller than the sum of its proper divisors (381959220972).

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

222444421332 is a wasteful number, since it uses less digits than its factorization.

222444421332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392205 (or 392196 counting only the distinct ones).

The product of its digits is 73728, while the sum is 33.

Adding to 222444421332 its reverse (233124444222), we get a palindrome (455568865554).

The spelling of 222444421332 in words is "two hundred twenty-two billion, four hundred forty-four million, four hundred twenty-one thousand, three hundred thirty-two".