212021100012 has 24 divisors (see below), whose sum is σ = 499614080112. Its totient is φ = 69973960000.

The previous prime is 212021099929. The next prime is 212021100059. The reversal of 212021100012 is 210001120212.

212021100012 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

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, 87466239 + ... + 87468662.

It is an arithmetic number, because the mean of its divisors is an integer number (20817253338).

Almost surely, 2^212021100012 is an apocalyptic number.

It is an amenable number.

212021100012 is an abundant number, since it is smaller than the sum of its proper divisors (287592980100).

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

212021100012 is a wasteful number, since it uses less digits than its factorization.

212021100012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174935009 (or 174935007 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 212021100012 its reverse (210001120212), we get a palindrome (422022220224).

The spelling of 212021100012 in words is "two hundred twelve billion, twenty-one million, one hundred thousand, twelve".