212102121012 has 24 divisors (see below), whose sum is σ = 494951878176. Its totient is φ = 70694002848.

The previous prime is 212102120999. The next prime is 212102121017. The reversal of 212102121012 is 210121201212.

212102121012 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 212102120982 and 212102121000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212102121017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 705358 + ... + 960069.

It is an arithmetic number, because the mean of its divisors is an integer number (20622994924).

Almost surely, 2^212102121012 is an apocalyptic number.

It is an amenable number.

212102121012 is an abundant number, since it is smaller than the sum of its proper divisors (282849757164).

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

212102121012 is a wasteful number, since it uses less digits than its factorization.

212102121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1676047 (or 1676045 counting only the distinct ones).

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

Adding to 212102121012 its reverse (210121201212), we get a palindrome (422223322224).

The spelling of 212102121012 in words is "two hundred twelve billion, one hundred two million, one hundred twenty-one thousand, twelve".