212112210010000 has 100 divisors (see below), whose sum is σ = 523234398842892. Its totient is φ = 83244036928000.

The previous prime is 212112210009977. The next prime is 212112210010081. The reversal of 212112210010000 is 10012211212.

It can be written as a sum of positive squares in 10 ways, for example, as 183190702761616 + 28921507248384 = 13534796^2 + 5377872^2 .

It is a tau number, because it is divible by the number of its divisors (100).

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 19 ways as a sum of consecutive naturals, for example, 199575859 + ... + 200635858.

Almost surely, 2^{212112210010000} is an apocalyptic number.

212112210010000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212112210010000 is an abundant number, since it is smaller than the sum of its proper divisors (311122188832892).

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

212112210010000 is an equidigital number, since it uses as much as digits as its factorization.

212112210010000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400211798 (or 400211777 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 212112210010000 its reverse (10012211212), we get a palindrome (212122222221212).

The spelling of 212112210010000 in words is "two hundred twelve trillion, one hundred twelve billion, two hundred ten million, ten thousand".