212100212120 has 32 divisors (see below), whose sum is σ = 477692979120. Its totient is φ = 84756973440.

The previous prime is 212100212063. The next prime is 212100212153. The reversal of 212100212120 is 21212001212.

It is a junction number, because it is equal to n+sod(n) for n = 212100212095 and 212100212104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2555882 + ... + 2637561.

Almost surely, 2^212100212120 is an apocalyptic number.

212100212120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212100212120 is an abundant number, since it is smaller than the sum of its proper divisors (265592767000).

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

212100212120 is a wasteful number, since it uses less digits than its factorization.

212100212120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5194475 (or 5194471 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 212100212120 its reverse (21212001212), we get a palindrome (233312213332).

The spelling of 212100212120 in words is "two hundred twelve billion, one hundred million, two hundred twelve thousand, one hundred twenty".