222200121216 has 128 divisors (see below), whose sum is σ = 594626054400. Its totient is φ = 73515020288.

The previous prime is 222200121167. The next prime is 222200121217. The reversal of 222200121216 is 612121002222.

It is a tau number, because it is divible by the number of its divisors (128).

It is a junction number, because it is equal to n+sod(n) for n = 222200121192 and 222200121201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222200121217) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 51877411 + ... + 51881693.

It is an arithmetic number, because the mean of its divisors is an integer number (4645516050).

Almost surely, 2^222200121216 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 222200121216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (297313027200).

222200121216 is an abundant number, since it is smaller than the sum of its proper divisors (372425933184).

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

222200121216 is a wasteful number, since it uses less digits than its factorization.

222200121216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5276 (or 5264 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 222200121216 its reverse (612121002222), we get a palindrome (834321123438).

The spelling of 222200121216 in words is "two hundred twenty-two billion, two hundred million, one hundred twenty-one thousand, two hundred sixteen".