20112221220200 has 24 divisors (see below), whose sum is σ = 46760914337430. Its totient is φ = 8044888488000.

The previous prime is 20112221220197. The next prime is 20112221220229. The reversal of 20112221220200 is 202212221102.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 13196930686564 + 6915290533636 = 3632758^2 + 2629694^2 .

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 5 ways as a sum of consecutive naturals, for example, 50280552851 + ... + 50280553250.

Almost surely, 2^{20112221220200} is an apocalyptic number.

20112221220200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20112221220200 is an abundant number, since it is smaller than the sum of its proper divisors (26648693117230).

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

20112221220200 is a wasteful number, since it uses less digits than its factorization.

20112221220200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100561106117 (or 100561106108 counting only the distinct ones).

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

Adding to 20112221220200 its reverse (202212221102), we get a palindrome (20314433441302).

The spelling of 20112221220200 in words is "twenty trillion, one hundred twelve billion, two hundred twenty-one million, two hundred twenty thousand, two hundred".