222202201212200 has 144 divisors (see below), whose sum is σ = 568517832022140. Its totient is φ = 80706509593600.

The previous prime is 222202201212197. The next prime is 222202201212241. The reversal of 222202201212200 is 2212102202222.

It can be written as a sum of positive squares in 6 ways, for example, as 119144254363684 + 103057946848516 = 10915322^2 + 10151746^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 15382394 + ... + 26096406.

Almost surely, 2^{222202201212200} is an apocalyptic number.

222202201212200 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 222202201212200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284258916011070).

222202201212200 is an abundant number, since it is smaller than the sum of its proper divisors (346315630809940).

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

222202201212200 is a wasteful number, since it uses less digits than its factorization.

222202201212200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10714908 (or 10714888 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 222202201212200 its reverse (2212102202222), we get a palindrome (224414303414422).

The spelling of 222202201212200 in words is "two hundred twenty-two trillion, two hundred two billion, two hundred one million, two hundred twelve thousand, two hundred".