212021220012200 has 24 divisors (see below), whose sum is σ = 492949336528830. Its totient is φ = 84808488004800.

The previous prime is 212021220012163. The next prime is 212021220012209. The reversal of 212021220012200 is 2210022120212.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 158943962860804 + 53077257151396 = 12607298^2 + 7285414^2 .

It is not an unprimeable number, because it can be changed into a prime (212021220012209) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 530053049831 + ... + 530053050230.

Almost surely, 2^{212021220012200} is an apocalyptic number.

212021220012200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212021220012200 is an abundant number, since it is smaller than the sum of its proper divisors (280928116516630).

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

212021220012200 is a wasteful number, since it uses less digits than its factorization.

212021220012200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060106100077 (or 1060106100068 counting only the distinct ones).

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

Adding to 212021220012200 its reverse (2210022120212), we get a palindrome (214231242132412).

The spelling of 212021220012200 in words is "two hundred twelve trillion, twenty-one billion, two hundred twenty million, twelve thousand, two hundred".