222221102012 has 96 divisors (see below), whose sum is σ = 504590779392. Its totient is φ = 83222194176.

The previous prime is 222221102011. The next prime is 222221102041. The reversal of 222221102012 is 210201122222.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222221102011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 675263 + ... + 948905.

It is an arithmetic number, because the mean of its divisors is an integer number (5256153952).

Almost surely, 2^222221102012 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 222221102012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252295389696).

222221102012 is an abundant number, since it is smaller than the sum of its proper divisors (282369677380).

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

222221102012 is a wasteful number, since it uses less digits than its factorization.

222221102012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273787 (or 273785 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 222221102012 its reverse (210201122222), we get a palindrome (432422224234).

The spelling of 222221102012 in words is "two hundred twenty-two billion, two hundred twenty-one million, one hundred two thousand, twelve".