10000222221220 has 144 divisors (see below), whose sum is σ = 26761455786240. Its totient is φ = 3103909939200.

The previous prime is 10000222221211. The next prime is 10000222221221. The reversal of 10000222221220 is 2212222200001.

It is a junction number, because it is equal to n+sod(n) for n = 10000222221194 and 10000222221203.

It is not an unprimeable number, because it can be changed into a prime (10000222221221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 635700 + ... + 4517140.

It is an arithmetic number, because the mean of its divisors is an integer number (185843442960).

Almost surely, 2^{10000222221220} is an apocalyptic number.

10000222221220 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 10000222221220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13380727893120).

10000222221220 is an abundant number, since it is smaller than the sum of its proper divisors (16761233565020).

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

10000222221220 is a wasteful number, since it uses less digits than its factorization.

10000222221220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3881714 (or 3881705 counting only the distinct ones).

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

Adding to 10000222221220 its reverse (2212222200001), we get a palindrome (12212444421221).

The spelling of 10000222221220 in words is "ten trillion, two hundred twenty-two million, two hundred twenty-one thousand, two hundred twenty".