222122312200 has 72 divisors (see below), whose sum is σ = 523608241950. Its totient is φ = 87631395840.

The previous prime is 222122312189. The next prime is 222122312207. The reversal of 222122312200 is 2213221222.

It can be written as a sum of positive squares in 9 ways, for example, as 3395859076 + 218726453124 = 58274^2 + 467682^2 .

It is not an unprimeable number, because it can be changed into a prime (222122312207) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 961596 + ... + 1170004.

Almost surely, 2^222122312200 is an apocalyptic number.

222122312200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222122312200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261804120975).

222122312200 is an abundant number, since it is smaller than the sum of its proper divisors (301485929750).

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

222122312200 is a wasteful number, since it uses less digits than its factorization.

222122312200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208571 (or 208489 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 222122312200 its reverse (2213221222), we get a palindrome (224335533422).

The spelling of 222122312200 in words is "two hundred twenty-two billion, one hundred twenty-two million, three hundred twelve thousand, two hundred".