2212221201210 has 96 divisors (see below), whose sum is σ = 5810330352528. Its totient is φ = 583923225600.

The previous prime is 2212221201187. The next prime is 2212221201263. The reversal of 2212221201210 is 121021222122.

It is a happy number.

2212221201210 is a `hidden beast` number, since 2 + 212 + 221 + 20 + 1 + 210 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 607132380969 + 1605088820241 = 779187^2 + 1266921^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 34810224 + ... + 34873716.

Almost surely, 2^{2212221201210} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2212221201210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2905165176264).

2212221201210 is an abundant number, since it is smaller than the sum of its proper divisors (3598109151318).

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

2212221201210 is a wasteful number, since it uses less digits than its factorization.

2212221201210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67440 (or 67437 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2212221201210 its reverse (121021222122), we get a palindrome (2333242423332).

The spelling of 2212221201210 in words is "two trillion, two hundred twelve billion, two hundred twenty-one million, two hundred one thousand, two hundred ten".