212103133312 has 128 divisors (see below), whose sum is σ = 487427155200. Its totient is φ = 90055065600.

The previous prime is 212103133279. The next prime is 212103133337. The reversal of 212103133312 is 213331301212.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55334148 + ... + 55337980.

It is an arithmetic number, because the mean of its divisors is an integer number (3808024650).

Almost surely, 2^212103133312 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 212103133312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243713577600).

212103133312 is an abundant number, since it is smaller than the sum of its proper divisors (275324021888).

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

212103133312 is a wasteful number, since it uses less digits than its factorization.

212103133312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4414 (or 4402 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 212103133312 its reverse (213331301212), we get a palindrome (425434434524).

The spelling of 212103133312 in words is "two hundred twelve billion, one hundred three million, one hundred thirty-three thousand, three hundred twelve".