212212200100 has 36 divisors (see below), whose sum is σ = 461508233284. Its totient is φ = 84699118080.

The previous prime is 212212200091. The next prime is 212212200113. The reversal of 212212200100 is 1002212212.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 8067273124 + 204144926976 = 89818^2 + 451824^2 .

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 2276097 + ... + 2367496.

Almost surely, 2^212212200100 is an apocalyptic number.

212212200100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212212200100 is an abundant number, since it is smaller than the sum of its proper divisors (249296033184).

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

212212200100 is a wasteful number, since it uses less digits than its factorization.

212212200100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4644064 (or 4644057 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 212212200100 its reverse (1002212212), we get a palindrome (213214412312).

The spelling of 212212200100 in words is "two hundred twelve billion, two hundred twelve million, two hundred thousand, one hundred".