212120011100 has 36 divisors (see below), whose sum is σ = 461752544904. Its totient is φ = 84580332480.

The previous prime is 212120011039. The next prime is 212120011111. The reversal of 212120011100 is 1110021212.

It is a congruent number.

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, 3314042 + ... + 3377441.

Almost surely, 2^212120011100 is an apocalyptic number.

212120011100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212120011100 is an abundant number, since it is smaller than the sum of its proper divisors (249632533804).

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

212120011100 is a wasteful number, since it uses less digits than its factorization.

212120011100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6691814 (or 6691807 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 212120011100 its reverse (1110021212), we get a palindrome (213230032312).

The spelling of 212120011100 in words is "two hundred twelve billion, one hundred twenty million, eleven thousand, one hundred".