222200121220 has 192 divisors, whose sum is σ = 586553425920. Its totient is φ = 68688921600.

The previous prime is 222200121217. The next prime is 222200121223. The reversal of 222200121220 is 22121002222.

It is an interprime number because it is at equal distance from previous prime (222200121217) and next prime (222200121223).

It is a junction number, because it is equal to n+sod(n) for n = 222200121194 and 222200121203.

It is not an unprimeable number, because it can be changed into a prime (222200121223) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 120302337 + ... + 120304183.

It is an arithmetic number, because the mean of its divisors is an integer number (3054965760).

Almost surely, 2^222200121220 is an apocalyptic number.

222200121220 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 222200121220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293276712960).

222200121220 is an abundant number, since it is smaller than the sum of its proper divisors (364353304700).

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

222200121220 is a wasteful number, since it uses less digits than its factorization.

222200121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2474 (or 2472 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 222200121220 its reverse (22121002222), we get a palindrome (244321123442).

The spelling of 222200121220 in words is "two hundred twenty-two billion, two hundred million, one hundred twenty-one thousand, two hundred twenty".