10212221200220 has 96 divisors (see below), whose sum is σ = 23437594010880. Its totient is φ = 3737295744000.

The previous prime is 10212221200151. The next prime is 10212221200243. The reversal of 10212221200220 is 2200212221201.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3936845 + ... + 5993595.

It is an arithmetic number, because the mean of its divisors is an integer number (244141604280).

Almost surely, 2^{10212221200220} is an apocalyptic number.

10212221200220 is a gapful number since it is divisible by the number (10) 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 10212221200220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11718797005440).

10212221200220 is an abundant number, since it is smaller than the sum of its proper divisors (13225372810660).

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

10212221200220 is a wasteful number, since it uses less digits than its factorization.

10212221200220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2056912 (or 2056884 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 10212221200220 its reverse (2200212221201), we get a palindrome (12412433421421).

The spelling of 10212221200220 in words is "ten trillion, two hundred twelve billion, two hundred twenty-one million, two hundred thousand, two hundred twenty".