212011110012 has 96 divisors (see below), whose sum is σ = 540887445504. Its totient is φ = 64239436800.

The previous prime is 212011109993. The next prime is 212011110029. The reversal of 212011110012 is 210011110212.

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

It is a self number, because there is not a number n which added to its sum of digits gives 212011110012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9747093 + ... + 9768819.

It is an arithmetic number, because the mean of its divisors is an integer number (5634244224).

Almost surely, 2^212011110012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212011110012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270443722752).

212011110012 is an abundant number, since it is smaller than the sum of its proper divisors (328876335492).

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

212011110012 is a wasteful number, since it uses less digits than its factorization.

212011110012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22699 (or 22697 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 212011110012 its reverse (210011110212), we get a palindrome (422022220224).

The spelling of 212011110012 in words is "two hundred twelve billion, eleven million, one hundred ten thousand, twelve".