212003012312 has 128 divisors (see below), whose sum is σ = 500682000000. Its totient is φ = 83624099328.

The previous prime is 212003012311. The next prime is 212003012357. The reversal of 212003012312 is 213210300212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212003012311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12441014 + ... + 12458042.

It is an arithmetic number, because the mean of its divisors is an integer number (3911578125).

Almost surely, 2^212003012312 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 212003012312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (250341000000).

212003012312 is an abundant number, since it is smaller than the sum of its proper divisors (288678987688).

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

212003012312 is a wasteful number, since it uses less digits than its factorization.

212003012312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17418 (or 17400 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 212003012312 its reverse (213210300212), we get a palindrome (425213312524).

The spelling of 212003012312 in words is "two hundred twelve billion, three million, twelve thousand, three hundred twelve".