212100022100 has 36 divisors (see below), whose sum is σ = 460762467648. Its totient is φ = 84746844000.

The previous prime is 212100022061. The next prime is 212100022117. The reversal of 212100022100 is 1220001212.

It is a happy number.

212100022100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1073006 + ... + 1255205.

Almost surely, 2^212100022100 is an apocalyptic number.

212100022100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212100022100 is an abundant number, since it is smaller than the sum of its proper divisors (248662445548).

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

212100022100 is a wasteful number, since it uses less digits than its factorization.

212100022100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2329136 (or 2329129 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 212100022100 its reverse (1220001212), we get a palindrome (213320023312).

The spelling of 212100022100 in words is "two hundred twelve billion, one hundred million, twenty-two thousand, one hundred".