212100100212012 has 12 divisors (see below), whose sum is σ = 494900233828056. Its totient is φ = 70700033404000.

The previous prime is 212100100212001. The next prime is 212100100212097. The reversal of 212100100212012 is 210212001001212.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 212100100211982 and 212100100212000.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8837504175489 + ... + 8837504175512.

It is an arithmetic number, because the mean of its divisors is an integer number (41241686152338).

Almost surely, 2^{212100100212012} is an apocalyptic number.

It is an amenable number.

212100100212012 is an abundant number, since it is smaller than the sum of its proper divisors (282800133616044).

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

212100100212012 is a wasteful number, since it uses less digits than its factorization.

212100100212012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17675008351008 (or 17675008351006 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 212100100212012 its reverse (210212001001212), we get a palindrome (422312101213224).

The spelling of 212100100212012 in words is "two hundred twelve trillion, one hundred billion, one hundred million, two hundred twelve thousand, twelve".